Drain Fly Kit

$67.00

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4.0 Rating: 4.0

26 Reviews | 16 Q&A 

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For large order quotes, please call us at 1-866-581-7378.

Drain Fly Kit

The Drain Fly Kit used to come with DF 5000 drain gel.  We now are placing InVade Bio Drain Gel due to customer demand, performance, and better economy for our customers. The video instructions on this page apply to any gel even though DF5000 is used in the video.

The Drain Fly Kit with Invade Bio Drain Gel will treat up to two infested drains and includes CB-80 Aerosol to control nuisance flies during the treatment process, plus 12 Catchmaster 100i Insect Monitors (Pack of 4 boards that split) to monitor infested drains. CB-80 Aerosol will shoot out in quick misting spurts that will allow you to spot treat around sinks and drains and in open areas.

If you have drain flies in a master bathroom with 4 drains (i.e., two sinks, a bathtub, and a shower), you would need two Drain Fly Kits. One bottle of Invade Bio Drain Gel treats one drain for one week.

Be sure to do a thorough Inspection of the area where you have seen drain flies to be sure that you have Identified them properly. Different types of flies will require different treatments.


Drain Fly Kit is made up of these products:

CB-80 Aerosol - 17 oz. can 1 x CB-80 Aerosol - 17 oz. can
The industry's best-selling flushing & contact insecticide, providing an extra-fast knockdown and kill.

 Label     MSDS
$24.69
InVade Bio Drain 2 x InVade Bio Drain
Eliminate nasty drain odors, sugar snakes, and scum at the source with InVade Bio Drain.

 Label     MSDS
$43.46
Catchmaster 100i Insect Monitors (Pack of 4) 1 x Catchmaster 100i Insect Monitors (Pack of 4)
0

    
$5.00

Cost of separate parts: $73.15

You save $6.15!

Target pests: drain flies
For use in: indoors, in and around infested drains.



The Drain Fly Kit contains three different items for complete treatment and monitoring of drain fly infestations. InVade Bio Drain Gel contains natural microbes (bacillus bacteria) and citrus oil with an emulsifier and gelling agent. The microbes break down the scum and organic buildup that are the breeding grounds for drain flies. By targeting the source of the infestation, drain flies are eliminated and kept away. CB-80 Aerosol contains natural pyrethrins and stabilizers to knock down adult flies in the area at the time of application. The included glue boards are used to determine which drains are infested and to monitor treatments. The Drain Fly Kit is not a substitution for general sanitation. Repeat applications should be made until drain fly activity has ceased. The InVade Bio Drain Gel can also be used weekly or monthly for prevention.

Always be sure to properly Identify  the flies you are treating: different types of fly treatment will require different products and applications.

How to Apply the Drain Fly Kit

The Drain Fly Kit with InVade Bio Drain Gel will treat up to 2 infested drains.

STEP 1 - INSPECT - Catchmaster 100i Insect Monitors

You should cover infested drains with the included glue board traps. You do this by folding the boards in half like a tent, and then peeling off the plastic film on the glue. (Do not fold the glue boards into the triangle shape.)

*Place the glue board over each drain at night that you want to monitor. The board should sit slightly up off the drain (as shown in the image below), allowing air to move into and out of the drain.

*This will allow you to (1) determine which drains are infested by drain flies so you can focus your treatment in the right areas, and (2) monitor and control infested drains during treatment by catching adult flies that exit the drain.

*If you are treating a bathroom, you should place one glue board over the sink and one over the bathtub drain.

*Tip: After each night, circle caught flies with a marker so that you can see how many were caught each day.

STEP 2 - DRAIN GEL - InVade Bio Drain Gel

InVade Bio Drain Gel contains natural bacteria that break down the organic buildup in drains where drain flies want to breed. Breaking down this breeding source is the key to eliminating drain fly infestations.

*InVade Bio Drain Gel contains citrus oil for a fresh scent.

*Use level markers on InVade Bio Drain Gel bottle to track correct usage.

*Pour 4 oz. of Invade Bio Drain Gel down each infested drain every night for at least 5 nights. *DO NOT rinse the drain with water right after applying the Bio Drain Gel -- you should let the sink sit all night without being used.

*Cover the drain with a glue board (see step 1) during the night to catch any escaping flies.

*When applying in a garbage disposal, turn on disposal for a few seconds to disperse drain gel.

*Apply drain gel during times of lowest use, such as at night or when leaving for several hours.

*Use drain gel weekly for high-use drains or monthly for home drains for maintenance.

*Use a permanent marker to keep track of flies on glue boards that have already been caught.

*InVade Bio Drain Gel can also be diluted with water for mopping and application in other areas where organic buildup occurs, such as dumpsters and trash chutes.

STEP 3 - SPACE SPRAY - CB-80 Aerosol

CB-80 Aerosol contains natural pyrethrins that kill adult drain flies and other flying pests quickly.

*Use CB-80 to rid infested areas of existing adult flies.

*Close doors and windows to treatment area before spraying.

*Apply CB-80 as a space spray by depressing the nozzle for 2-3 seconds per 1,000 cubic feet.

*Spray directly into the middle of the treatment area for small spaces, or use a sweeping motion for larger areas.

*Allow spray to settle and dry before ventilating and then re-entering the area.

*Sweep up and destroy fallen insects.

*Use CB-80 to kill adult flies and other pests on contact.

*Applications may be made as needed.

*CB-80 can be used in most areas. Do not spray when food or utensils are exposed or may be become contaminated.

*Keep other people and pets out of the treatment area until the spray has dried.

*CB-80 also kills most common insect pests on contact, plus it makes a great flushing agent to check for and clean out crawling pests.

Rating Snapshot

5 stars   12
4 stars   8
3 stars   2
2 stars   1
1 star   3

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Average Customer Rating
4.0 star rating (26 reviews)

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Most Helpful Customer Reviews
  • 12 of 13 people found this review helpful:

    3 of 5 Stars  Drain Fly Kit Review
    By SI in Atlanta, GA on June 21, 2010
    Verified Purchase

    Although the Drain Fly Kit helped reduce the number of drain fleas, it did not eliminate the problem. The Catchmaster sticky paper does help locate the source of the problem though.

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  • 12 of 12 people found this review helpful:

    4 of 5 Stars  Drain Fly kit
    By Kathy in Lower Burrell, PA on December 27, 2010
    Verified Purchase

    The sticky paper showed us exactly where the problem was - not actually in the sink drain but where the drain pipe goes into the floor - never would have guessed. The spray kills instantly - great!  Don't know how much the green drain cleaner works as I am too big to fit down the sink drain.  All in all - a great product.  Thank you, Katy

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  • 9 of 9 people found this review helpful:

    5 of 5 Stars  It works really good
    By Mark in Mpls. MN on August 22, 2011

    I had tons of drain flys and tried some other home remedies that didn't work. In 3 days with this fluid they were no longer hatching. One thing I did to get rid of the ones flying around was take a small plastic container and mix 1 part water (1 cup) with 1 part (1 cup) apple cider vinegar and a a couple drops of dish soap (which keeps the surface from getting a film). They are attracted to the smell of the vinegar and drown in the container. We caught probably 100 in there. My son also rimmed the inside of the container with dish soap as he thinks they slide into the water/vinegar better. I preferred this method to killing the flies vs. the spray bottle stuff in the kit. We had flys mostly coming form the disposal side of our sink but also the other side fo the sink so I put the DF50 in both sides. The bottom line though is you have to keep new flys from hatching and this stuff works for sure. 3 days is pretty good!

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  • 9 of 9 people found this review helpful:

    5 of 5 Stars  Worked well
    By Lou in Madison, NJ on November 17, 2010
    Verified Purchase

    I used the DF5000 but the Drain Flies were still present after a week. My wife noticed that they larvae were coming from tiny cracks in the grout on the shower floor. I spread some of the DF500 on the floor and used a brush to clean the grout well and let it sit overnight. It has been two weeks now and have not seen any Drain Flies. I used the DF500 and the glue pads, but I did not use the spray. You may not need the spray if you do not have a great deal of flies.

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  • 7 of 7 people found this review helpful:

    4 of 5 Stars  Drain Fly Kit
    By Donica in Marietta, GA on August 6, 2010
    Verified Purchase

    Worked very well, but it took over two weeks to completely kill all of the flies.

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Most Recent Customer Reviews
  • 4 of 5 Stars  Great Product
    By Anthony in memphis ,tn on September 19, 2014
    Verified Purchase

    I follow the direction on the instruction sheet and the drain flies were gone. It took about seven days to stop the flies. I am doing the treatment every other day at the moment. It took about two bottles for the first treatment. I think it would be a good idea to purchase at least four bottles the first time. I will apply my last two bottles every other day. Hopefully this will keep the flies away for good. If not, I will be back for more.

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  • 2 of 3 people found this review helpful:

    4 of 5 Stars  No more flies
    By Tom in Pembroke Pines, FL on August 25, 2014
    Verified Purchase

    After about a year renting this house, we suddenly started to find dead flies in the master bath tub. Once in a while a few would make it beyond and die on the floor or vanity counter. Eventually it reached into the dozens upon dozens. We've never used the tub so the drain has been mostly stagnant for quite some time, only thing I've done is run some water to flush out a pail or to fill the pail for floor washing. The landlord asked me to get some quotes for pest services which were about $200 or so for a one pest treatment or about $60/2 mo for ongoing pest control. Not having any other issues here, I thought it was a bit much so I did some online research. Actually found the fly photo and description at the Orkin site. Then I found this site and seeing mostly positive reviews, I suggested the landlord let me give it a try. He initially just wanted me to try some bleach down the drain, but I was afraid of excessive corrosion if there were metal sections. So he gave me the ok to get this kit which is somewhat cheaper than just buying the two bottles and the aerosol. I didn't need the sticky paper - it was clearly obvious where they were coming from - I actually stoppered the drain and the number of dead found in the tub decreased significantly before the kit arrived. So I knew the source, I just could not see down the drain due to an attached stopper thingie. After getting the kit, I unscrewed the stopper to get better access. I ran some water and let it drain down - it was very slow, then I poured a dose of the drain cleaner stuff. I took the aerosol and sprayed a few shots into the drain and the overflow on the tub to be sure no adults were hiding out. Next day I flushed it a bit and saw the cleaner was starting to work already - I could see the pipe was plastic below the upper metal section and there was a big wad of hair and gunk stuck to the metal x-section that supports the stopper. I was able to pull out most the wad and toss it in the trash. I continued with 4-5 more treatments - each allowed to set for at least 24 hrs and followed by a brief water flush. The water ran much faster now, no more backups. Better - no more flies. It has been over a week now since finishing and no signs of any flies :)

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  • 1 of 1 people found this review helpful:

    3 of 5 Stars  Drain Fly Kit
    By Julie in North Charleston, SC on July 14, 2014
    Verified Purchase

    This kit helped us tremendously with our drain flies, but we still have them around. The instructions are easy to follow. There is not much to the procedure, so it was not time consuming at all. It took care of the huge infestation that we had, but it did not rid us of the problem. We are out of the drain cleaner, and we still have to use the spray several times a day.

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  • 1 of 1 people found this review helpful:

    5 of 5 Stars  drain fly kit
    By Moises in brooklyn,new york on May 13, 2014
    Verified Purchase

    worked fast and completely got rid of the drain flies,another advantage was the nice citrusy smell wherever the drains were treated.

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  • 4 of 4 people found this review helpful:

    4 of 5 Stars  They Are Gone!
    By Barbara in LAKE ARIEL on August 18, 2012
    Verified Purchase

    Well, we bought the kit and found the flies were coming through the overflow in our bathroom sink. No amount of this stuff would get rid of them. :-( We were in the basement and noticed that our dehumidifier was not draining correctly and had filled up. We inspected the tube that went from the dehumidifier to the drain and found our organic matter and source of the flies. We got rid of that tube and coated the new tube with this orange stuff and we have been fly-free since. We are going to maintain that tube with this orange stuff from now on. Just be careful with the orange stuff as it does stain.

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  • 2 of 3 people found this review helpful:

    1 of 5 Stars  Drain Flies Go Away
    By Ali in Newark, DE on August 8, 2012
    Verified Purchase

    I wish I could say it worked. But it didn't. I followed the you tube video on how to use the drain fly kit and I have not been successful. I still have at least 5-8 drain flies flying around in my shower every day. I am not sitting with all this extra product because I bought double the amount. I am not sure what to do now.

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  • 2 of 2 people found this review helpful:

    4 of 5 Stars  Drain Fly Kit
    By GR in Maryland on June 27, 2012
    Verified Purchase

    I can't speak to the kit except that the spray was for a timed device which was not part of the kit. Plenty of sticky mats were sent. I gave it to tenants to use, so I can't speak to whether or not they used it as directed, but the online video is excellent. It arrived very quickly. I will order again if needed. The only reason for 4 stars instead of five is the spray.

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  • 2 of 2 people found this review helpful:

    5 of 5 Stars  Drain Fly kit
    By Nancy in Brighton, CO 80602 on June 21, 2012
    Verified Purchase

    This product worked great on getting rid of the drain flies. I bought more of this so I can my drains clean of insects.

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  • 2 of 2 people found this review helpful:

    5 of 5 Stars  drain fly problem
    By Emily in Suffolk, VA on May 31, 2012
    Verified Purchase

    This product seemed to help our problem we were having with drain flies. We were seeing them before treatment and during treatment, we saw one. We haven't seen any since the treatment period ended. Would recommend this product to someone having the same problem.

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  • 2 of 2 people found this review helpful:

    5 of 5 Stars  Drain Fly Kit
    By Nancy in TN on February 26, 2012

    Wonderful. The glue traps are a stroke of genius - helped us isolate the problem - a shower drain that we don't use.We didn't have to waste material on drains that did not have a problem. We treated the troublesome drain and haven't seen a fly since. Thank you.

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Most Helpful Q&A's

June 20, 2011

QHow do you get rid of drain flies?

ADrain flies breed and lay eggs in areas where there is decaying organic matter such as bathroom drains. To start the process of getting rid of this pest, you must thoroughly clean the drain where the worms have been spotted. Next, you should apply a product called Invade Bio Drain. The Invade Bio Drain gel will coat the inside of the pipe and will help breakdown built up organic matter. This process must be repeated every night for 5-7 days. In pipes where there is a lot of built up organic matter, a second week long treatment may be needed. If you have spotted adult drain flies in your home, you can spray a product called On-Time Metered Aerosol  to help eliminate these breeding adults. You should place glue boards over each drain in the bathroom to capture any flying adults entering or leaving the drains. Using glue boards also helps monitor the level of infestation. We have all of these products combined into a Drain Fly Kit for your convenience.

11 of 15 people found this answer helpful.
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July 4, 2011 Tammy asked:

QI am wondering how to attack my drain fly problem first.
I have drain flies in the kitchen (where I first saw them 3 years ago), and now have them in both bathrooms. I wonder if they are behind the kitchen cabinets, too(?). We had a flood in the kitchen area 4 years ago. Not sure if that's related. Could they spreading to the other drains? We also have a floor drain (our kitchen is on the walk-out basement level) and wonder if I should treat that, too.

AAll drains in an infested room must be treated. Drain flies can definitely spread from one room to another and drain flies can breed anywhere there is a buildup of moist decaying organic matter as that is all they need to breed. We recommend that you check out our Drain Fly Kit which comes with all of the products we would recommend to treat a drain fly infestation plus it comes with a step by step instruction guide to help you through the process. You can also watch the instructional video on the Drain Fly Kit page on our website (scroll towards the bottom of the page to read our instructional guide). If after following the inspection instructions on our drain fly page you find that the flies are not developing in the drains you may need to find a way to get behind the cabinets and thoroughly clean the area you suspect is infested.

4 of 4 people found this answer helpful.
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August 26, 2013 Tim from Delaware asked:

QIs the Invade Bio Drain Gel safe for septic systems?

AYes, the Invade Bio Drain Gel (and other drain gels) is perfectly safe for septic systems.

3 of 3 people found this answer helpful.
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March 8, 2011 Joel asked:

QWhat chemicals can we use to repel and eradicate leeches?
Lots of small leeches coming out of my bath room drain.

A

Have you had these pests actually identified as leeches? Are you seeing small moths or flies in your bathroom? Usually, small worms coming out of the drain indicates drain flies. We recommend that you take a few moments to google 'drain fly larvae' and see if the pictures correspond with what you are seeing in your drain. If the pictures do correspond with what you are seeing, there a few things you should do. Drain flies breed and lay eggs in areas where there is decaying organic matter such as bathroom drains. To start the process of getting rid of this pest you must thoroughly clean the drain where the worms have been spotted. Next you should apply a product called DF 5000. The DF 5000 drain fly gel will coat the inside of the pipe and will help breakdown built up organic matter. This process must be repeated every night for 5-7 days. In pipes where there is a lot of built up (organic matter), a second week long treatment may be needed. If you have spotted adult drain flies in your home, you can spray a product called Clean Air Purge III to help eliminate these breeding adults. You should place glue boards over each drain in the bathroom to capture any flying adults entering or leaving the drains. Using glue boards also helps monitor the level of infestation. We have all of these products combined into a Drain Fly Kit for your convenience.

If these pictures do not look like what you are seeing you must have the insect identified so the appropriate treatment can be recommended. You should contact your local Cooperative Extension Office and ask to speak to the entomologist on staff. The entomologist will tell you how to properly collect a sample for identification purposes or he/she may request a picture.

2 of 9 people found this answer helpful.
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January 2, 2010 B.d.fenton asked:

QCan you use DF5000 in a garbage disposal?

AYes, the DF 5000 Drain Fly Gel in our Drain Fly Kit can be used in a garbage disposal and it will not harm your garbage  disposal in any way.

2 of 2 people found this answer helpful.
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Most Recent Customer Questions

June 12, 2015 Garland from Anniston, Alabama asked:

QIs it safe to treat toilets in an RV?
This past summer I had the problem of drain flies coming from RV holding tank of black water. Are these products safe for this type of plumbing?

A

Yes, Invade Bio Drain can be used inside toilets in an RV.

A better option may be to use the Invade Hotspot because it foams and will coat the drain better.

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June 9, 2015 Yvonne from Greensboro, North Carolina asked:

QIs the Drain Fly Kit the best product for gnats? Is it safe to spray into the drain?
I just began to see gnats this week for the first time, i don`t know where they are coming from, could it be the sink drain, or where else would they come from? I first saw them in my bathroom and the next day in my kitchen. I`ve ordered from you in the past, I live in a condo and when a new owner moved in, they brought their roaches with them, but your products took care of that. I would never by these products anywhere else but DMOPC. you guys are great!

A Based on your description it sounds like drain flies. If you contact your local Extension Office and speak with the Entomologist on duty, they would be able to help positively I.D. this pest. If indeed they are drain flies, you want to first look around and check there are no water leaks. Please check out our article "Get Rid Of Drain Flies". You also want to use a Drain Gel that contains active enzymes that will eat away the organic materials allowing the drain flies to continue to thrive.

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October 16, 2014 Ray from Anchorage Ak asked:

QLarge Black Flies in Only One Room
We have 3-10 large black flies daily that only appear in one room that has 5 drains connected to a septic system. No other rooms in the house have this problem. Are there more than one type of drain fly? Most of the articles I've read reference small flies and these are large house flies.

A We really would like to know what type of flies you are dealing with and more information. Please call us at 866-581-7378 so that we can better assist you in treating this matter. We look forward to speakoing with you soon!

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December 23, 2013 Gloria from Jacksonville, Florida asked:

QI have a half bath with a sink and toilet only; how can I find out where the drain flys are coming from?
I close the drain in the sink but still there's many of them. I have to keep the door closed in order to confine them from the rest of the house. I need to get rid of these things but I don't know how. Please help.

A We recommend that you treat the sink and the toilet with a drain gel from our Drain Fly Kit. The kit includes glueboards to monitor the activity coming from the sink. Please let us know if you have any questions.

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September 24, 2013 Teig from Ingleside, Illinois asked:

QI have what looks like to be moth/drain flies in one of my bedrooms. None in the bathroom or kitchen. Help!

A

You should verify first if they are drain flies or moths - treatment for these two insects would vary.

Drain flies breed and lay eggs in areas where there is decaying organic matter which is usually bathroom or other drains. Really, they cannpot survive without some source of oisture or standing water. Locating and eliminating this source will be the key to eradicating your problem.

If you have spotted adult drain flies in your home you can spray a product called Clean Air Purge III to help eliminate these breeding adults. You should place glue boards over each drain in the bathroom to capture any flying adults entering or leaving the drains. Using glue boards also helps monitor the level of infestation. We have all of these products combined into a Drain Fly Kit for your convenience.

Please see our How To Get Rid of Drain Flies article for more thorough information.

0 of 1 people found this answer helpful.
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June 21, 2013 Kenneth from St Augustine Bch, Fl 32080s asked:

QHow to treat drain flies in a bathroom
I've had my home 32yrs. First drain fly infestation 2 yrs ago, back again at present, one bath. tried many home remedies, no help. Today I purchased 2 bottles bio, have I made the correct purchase? no basement, 2 baths

A We apologize we are unsure which bio foam you purchased. Please contact us at 866-581-7378 and one of our customer service resp will be more than happy to walk you through treating for drain flies

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June 18, 2013 Carol from Monroe, Ct asked:

QMy drains have been cleaned. The drain flies come out of every drain in the house.
Can the drain flies come in from the Septic Tank?

A Unless there is a crack in your drain pipes that lead to your septic tank, the drain flies will not come from that area. Use glue boards over the drains like shown in our drain fly video to make sure they are actually breeding in the drains, not just occasionally going down into them and then coming back out. You will want to treat with a drain gel that will eat away at any build up on the sides of the pipes that the flies can be leaving eggs/larvae behind in. Keep in mind, any area that holds moisture can be used as a breeding ground. Areas like inside toilet tanks, around seals of cauking on sinks and tubs, windows in bathrooms and kitchens, loose tiles that could be holding water underneath, and around kitchen sink hose sprayers, should all be cleaned and checked. You can check out our Drain Fly Kit and article on How To Get Rid Of Drain Flies for the best treatment methods. Feel free to contact us if you have any questions.

1 of 1 people found this answer helpful.
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June 16, 2013 Christal from Huntsville, Alabama asked:

QGnats
We just bought a newly built home in March. After about 2 weeks we notice gnats in the bathrooms. (Both are on the same side of the house). We have been working with a company to no avail. No one can determine where they are coming from. They have sprayed inside and outside. For a few days we will see a lot of dead bugs, but then they are flying around again. While they were building the house it rained the majority of time.

A Based on your description it sounds like drain flies. If you contact your local Extension Office and speak with the Entomologist on duty, they would be able to help positively I.D. this pest. If indeed they are drain flies, you want to first look around and check there are no water leaks. Please check out our article "Get Rid Of Drain Flies". You also want to use a Drain Gel that contains active enzymes that will eat away the organic materials allowing the drain flies to continue to thrive.

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November 28, 2012 Joe from Westerville. Oh 43081 asked:

QDrain flies disappeared
I bought a "kit" about 3 weeks ago. Once it arrived, i didnt open it because the flies have not shown up for about the same 3 weeks. Are they gone or should i still do the treatment? Also it's been cold lately in OH, would that effect their activity?

A It is possible that the drain they were breeding in cleared of the organic matter the needed to survive. Only time will tell if they are gone for good. If the drain/pipe hasn't been cleaned in a long time it is still worth your while to go ahead and clean the drain with the drain gel to avoid this problem in the future.

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December 28, 2011 Michelle from Zionsville, In asked:

QCan Drain Fly Kit be used in a toilet bowl?
I came home from a 10 day vacation only to find drain fly larvae (about 20-60) in the toilet bowl of an upstairs bathroom that is seldom used. I did notice a small fly in the hall by this bathroom before going on vacation, but didn't think anything about it. Of course, I was very concerned when I saw the surprise waiting for me upon my return. Following my first instinct I took a picture of it & then flushed the toilet. I also flushed bleach down the toilet. I haven't seen any more flies, but I don't want to take any chances. Could they be coming up from the toilet drain or did they just lay their larvae in the toilet bowl (due to the stagnant water)? Prior to this event, I hadn't noticed any flies in other areas of the house. I want to put an end to this before it gets out of control. Please advise!!!

A You can use DF5000 in the toilet bowl and in the toilet tank. Most likely the flies were introduced from outside and did not come up through the drains. Be sure to scrub the toilet and then add the drain gel. Let sit over night and flush. Repeat as necessary.

1 of 1 people found this answer helpful.
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