BTI Mosquito Dunks

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4.5 out of 5 stars Rating: 4.7

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BTI Mosquito Dunks - CASE (100 dunks)BTI Mosquito Dunks - CASE (100 dunks) case (100 dunks each)

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BTI Mosquito Dunks
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BTI Mosquito Briquets are a sustained-release larvicide that conveniently floats right on the water surface. These briquets can be used in virtually any standing water site where mosquito larvae grow. As the briquets float, BTI (or bacillus thuringiensis israelensis, a natural mosquito-killing biocontrol agent) is slowly released at the water’s surface and gradually settles in the water where it is consumed mosquito larvae. Bti kills mosquito larvae before they are able to grow into mature, biting adults, eventually controlling the mosquito population. Additionally, the toxin will continue to be released into the water for a period of 30 days or more, providing continuous kill. Each briquet will effectively treat up to 100 square feet of surface water regardless of depth.




Pesky mosquitoes love to live and breed in damp and wet areas where there is little or a lot of standing water, such as conatinerized ponds, flower pots, flooded basements roof gutters and old car tires.  If left undisrupted in these natural habitats, mosquito populations will continue to thrive. To address this problem, Summit Chemical has created Bti Mosquito Briquets, a sustained-release larvicide that conveniently floats right on the water surface. These briquets can be used in virtually any standing water site where mosquito larvae grow. As the briquets float, Bti (or bacillus thuringiensis israelensis, a natural mosquito-killing biocontrol agent) is slowly released at the water’s surface and gradually settles in the water where it is consumed by mosquito larvae. Bti kills both the mosquito larvae before they are able to grow into mature, biting adults. Additionally, the toxin will continue to be released into the water for a period of 30 days or more, providing continuous kill. Each briquet will effectively treat up to 100 square feet of surface water regardless of depth. For smaller surfaces, use ¼ or ½ briquet as directed on the product label. Alternate wetting and drying of this product will not reduce its effectiveness, so each briquette may be used and reused. Unused briquets will remain effective indefinitely. To prevent dunks from being washed away, anchor them using a string tied through the center hole, or they can be staked in place. Mosquito Briquets contain no poisonous chemicals and are harmless to other living things. May be used as either a pre- or post-hatch treatment.


Directions for Use:
These briquets/dunks may be used in all types of mosquito breeding areas. To prevent briquets/dunks from being flushed out of certain treatment sites, they can be anchored using string tied through the hole in the center or staked in place.

Pre-flood treatment. If the briquets/dunks are applied to dry areas listed on the label which are known or suspected to become breeding sites when flooded, such as abandoned swimming pools, the briquets will float to the surface when flooding occurs and start releasing the active Bti material. Alternate wetting and drying will not reduce their effectiveness.


APPLICATION RATES

Mosquito Larvae:
Flooded larvae breeding sites: Use one (1) Summit B.t.i. BRIQUET/DUNKS for up to 100 sq. ft. of surface area, regardless of depth. In water with a high organic content, such as sewage disposal systems or waste lagoons, the application rate may have to be increased to as much as four (4) times the normal dosage based upon evaluation by the user.

When larval populations are high, aquatic vegetation dense, or the water highly polluted at the time of briquet/dunks use, pre-treatment with SUMMIT MOSQUITO BITS® is recommended. The briquet/dunks will then suppress larval development for up to 30 days or more. Some larvae which hatch after briquet/dunks application may partially develop before dying. Allow a minimum of 48 hours for their control.

Pre-Flood treatment: Apply one (1 ) Summit B.t.i. BRIQUET/DUNKS to each 100 sq. ft. of dry bed surface which is known or suspected breeding site when flooded.

Evaporative Coolers: Apply one (1) Summit B.t.i. BRIQUET/DUNKS to each 100 sq. ft. of Cooler box or for smaller Coolers refer to the table below for application rate.

SAFE FOR USE IN FISH HABITATS

Outdoor Use around the Household to kill Mosquito Larvae: Summit B.t.i. BRIQUETS/DUNKS can be broken into portions for use in many outdoor applications near the household, such as standing water in bird baths, old automobile tires, rain barrels, abandoned or unused swimming pools (particularly above ground types), ditches, tree holes, roof gutters for collecting rainwater, flower pots, animal watering troughs or any other locations near the household where water collects and remains for periods of time. Summit B.t.i. BRIQUETS/DUNKS can be broken and used as shown in the following table, the amount dependent upon the surface area of water in the treatment site. Mosquito Dunks / Bti Briquets may also be used in any containerized standing water found near the home.


Preflood treatment around the Household: Apply Summit B.t.i. BRIQUETS/DUNKS to any dry surface listed on the label which is known to become flooded after a rain. Use the correct amount in accordance with the above dosage table.

INDOOR USE: For use in areas that collect water from time to time areas such as elevator shafts, basements that flood, sump pumps and any drainage areas within buildings. Use the correct amount in accordance with the above dosage table.

Waste WaterTreatment Plants: Place Summit B.t.i. BRIQUETS/DUNKS in a perforated basket, such as a minnow bait basket, and suspend the basket in the waste water stream before the water enters the trickling filter. Keep basket continuously filled with Briquets/Dunks to ensure a steady flow of Bti into the filter. The number of Briquets/Dunks needed for continuous, effective treatment in each facility will be dependent upon the volume and flow rate of the stream. This will have to be determined by the user.

Rating Snapshot

5 stars   39
4 stars   9
3 stars   2
2 stars   0
1 star   0

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Most Helpful Customer Reviews
  • 16 of 18 people found this review helpful:

    4 of 5 stars  Mosquito Dunks Work for Our Large Pastures
    By Donna in Mesa, Az on 09/05/2010

    We purchased 100 mosquito dunks for a horrible mosquito problem we had in our pastures. We didn't want anything poisonous for animals, but we needed something to get rid of them. Since our last irrigation, they have been cut in half and we hope with another go around of it, that we can diminish them down even further. I like that it kills the larva. The only down side for us is with 5 acres of pasture it would be nice if I could find something less labor intensive, i.e., something I could just drip into our irrigation system without have to walk the whole area placing these donuts out. Great product. Does it come in a concentrated liquid form for irrigation?

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  • 12 of 13 people found this review helpful:

    5 of 5 stars  Control those mosquitoes
    By Ona in Lakemont, GA on 05/03/2010
    Verified Purchase

    These are the best way to control mosquitoes in open rain barrels. We have used them for years but now that we have 5 barrels had to have a better price then at the box stores. Delighted for find them on line for 1/2 the price we had previously paid. We received them very quickly and have them in all the barrels at the present time.

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  • 11 of 11 people found this review helpful:

    5 of 5 stars  Mosquito Dunks
    By Leslie in Surfside, Potrero, Gste, Costa Rica on 06/30/2010

    I can't find dunks in Costa Rica, where I have a second home. Mosquitos down there can carry dengue and malaria. Yet preserving the environment for the great numbers of living things down there requires using something organic and natural. I put a dunk in my gray water drains once a month. Sometimes I drop one down the street in the rain culvert that is always damp. Within a few days there is a dramatic reduction in the numbers of mosquitos at my home. The dunks work GREAT!

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  • 7 of 14 people found this review helpful:

    3 of 5 stars  Surprised by insecticide in this biological product.
    By Joe in O.P, KS on 04/26/2012
    Verified Purchase

    I bought this product because it said it is safe. I may have read the description wrong but I thought that there would be no harmful chemicals in this product. That was what sold me with this product since my dog and little girl use the backyard where the dunks have been applied. To my surprise on the back of the packaging it says to not breathe in the dust, get on your skin, or in your eyes because of the chemicals in the product. I do not believe this product is just a biological control as described. I am not saying it is a bad product, it is working, you just get a few extra ingredients than what you pay for.

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  • 7 of 7 people found this review helpful:

    4 of 5 stars  Night time's pond
    By Roger in Levering, MI on 06/27/2011
    Verified Purchase

    Works well, but for large ponds as mine, buy 2 of the 20 pk. I also placed around home and one in my garage.

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Most Recent Customer Reviews
  • 3 of 3 people found this review helpful:

    5 of 5 stars  Mosquitos in my Pond.
    By Eleanor in Bayonne New Jersey on 07/10/2015

    I bought the Mosquito Dunks for my pond because you could not sit outside and enjoy my yard after dark. Well it definitely works. I will buy some more as soon as I run out. I recommend these Mosquito Dunks. Easy to use.

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  • 3 of 3 people found this review helpful:

    5 of 5 stars  skeeter dunks
    By Susan in Castle Rock, Co on 06/14/2015
    Verified Purchase

    Local stores were out, and we really need these. Price was better at your store anyway. So, from now on, we will order from you. Shipping was fast, and the product works very well.

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  • 3 of 3 people found this review helpful:

    5 of 5 stars  BTI Mosquito Dunks
    By Boleti in North, VA on 04/24/2015
    Verified Purchase

    They work! Get them out before the larvae are too big, if you wait until they get big, there is less time for the dunks to do their job.

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  • 7 of 7 people found this review helpful:

    5 of 5 stars  Definitely works
    By Tr in Winston-Salem, NC on 03/27/2015

    I work in the Health Dept for my county. The guys in Environmental Health use these dunks as the main component for their mosquito abatement program. They tell me that the dunks are appropriate organic controls, meaning organic farmers won't lose their organic certification for using these. I have a pond on my property and get clouds of mosquitos if I don't use these dunks. The thing is with these dunks is that you have to use them in a timely manner or a hatch of skeeters will get past you. I found critters like to eat these. So keep an eye out after you dunk them somewhere. If you tossed them somewhere and you still got skeeters, your dunk may have gotten eaten before it could affect the skeeter larvae.

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  • 4 of 4 people found this review helpful:

    4 of 5 stars  dunks!
    By Terry in Neb. on 07/22/2014
    Verified Purchase

    placed in a stagnant area about three weeks ago, seems to be doing what they claim..

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  • 3 of 3 people found this review helpful:

    4 of 5 stars  dunks
    By Ron in ashley mi on 07/16/2014
    Verified Purchase

    got than in good time put them out in the ditch thay must work no mosquitos

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  • 7 of 7 people found this review helpful:

    5 of 5 stars  Mosquito dunks
    By Chris in Hutchinson, Kansas on 07/09/2014
    Verified Purchase

    We have used these dunks (we call them donuts) for years. We have 26 acres of pasture land with a large slew running through it from one side to the other. We own horses and when we get a lot of rain the slew fills with standing water that can last for weeks. These donuts really do the trick. Our mosquito problem is very small. We also use a quarter of one donut in each of our bird baths. This product does not harm the birds, frogs or anything else that is in the water. Our cats drink from the bird baths too. When the water dries up the donut is still there if not completely dissolved just waiting for the next rain.

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  • 6 of 6 people found this review helpful:

    5 of 5 stars  Very good product
    By in Morristown, NJ on 07/02/2013
    Verified Purchase

    I have had quite a bit of standing water this year due to all the rain NJ has been experiencing. After using Mosquito Dunks in puddles (sometimes crumbling them) and bird baths there were no noticeable mosquitos at all! I am amazed.

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  • 7 of 7 people found this review helpful:

    4 of 5 stars  MOSQUITO DUNKS WORK
    By Ben in Jackson, MS on 08/16/2012

    These bad boys really work. My back yard backs up to a creek; the mosquitoes had gotten so bad that we had to stop going out back. Bought these and applied the length of my block - within 2-3 days the little buggers started to magically disappear. You have to tie/anchor them to the bank or they will float downstream, also critters like to eat 'em. You need a lot of string, but after the 1st application, you can just go back and attach another one to the string. To immediately kill the larva's, crush one and then tie one in for the long-lasting mosquito devastation. Actually only last about 15-20 days. This is why they only get 4 stars. These guys are also lightning fast on shipping. I'll be a customer for a long time!

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  • 4 of 4 people found this review helpful:

    3 of 5 stars  BTI Mosquito Dunks
    By Margaret in Santa Monica, CA 90405 on 07/29/2010
    Verified Purchase

    This product recommended by Vector Control Technician who showed me how to use it. Our number 1 concern was toxicity. This is a non-toxic treatment based on biological knowledge of mosquito gestation. It works. It is easily applied and safe to use.

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Most Helpful Q&A's

02/26/2010 Michael

QWhat is the shelf life of BTI Mosquito Dunks?
My agency has 7 boxes of BTI Mosquito dunks and I could find no date of expiration. Is there a limit on the length of time they can be stored before they are no longer effective?

ABTI Mosquito Dunks should be used within 2 years of the date of purchase. It is also important to store BTI Mosquito dunks out of direct sunlight and heat so that the product will not degrade.

32 of 33 people found this answer helpful.
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03/26/2012 Steve from Milwaukee, Wi

QAre BTI Mosquito Dunks safe to use in pools?
I set up a small pool for my children in the summer. Are these safe to put in the pool with them - specifically if they accidentally drink some of the water or get it in their eyes?

AAccording to Summit Chemical the manufacturer of the Mosquito Dunks, you can use the dunks directly in wading pools and they will not harm your children. These dunks will float on top of the water for several weeks so we would suggest that you take the dunks out of the pool while the children are in the water so they will not play with them.

24 of 25 people found this answer helpful.
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06/12/2013 Kathie from Baltimore, Md

QWill BTI Mosquito Dunks hurt my wildbirds drinking out of a bird bath that has been treated?
I want to treat my birdbaths but I don't want to do anything to harm my wild birds.

AIt will not harm the birds or any other animal that drinks from the water. The BTI dunks are designed to be used in rain barrels, horse and animal water troughs and similar areas like bird baths in a homeowners yard.

24 of 24 people found this answer helpful.
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10/05/2010 Jeffrey

QAre BTI Mosquito Dunks safe for use in ponds with fish in it?

AYes, BTI Mosquito Dunks are safe for use around aquatic life and fish in ponds.

16 of 18 people found this answer helpful.
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02/08/2012 Dee from Henderson, Nv

QI have a waterfall, my dog and cat love to drink out of it, will BTI be harmful to them?

ABTI is specifically labeled to be used in animal watering troughs so there should not be any problem with your animals drinking from the waterfall after it has been treated with BTI Mosquito Dunks.

8 of 8 people found this answer helpful.
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Most Recent Customer Questions

11/03/2015 Lenard from West Palm Beach, Fl

QWill BTI Mosquito Dunks harm turtles or birds?

A

No, BTI Mosquito Dunks will not harm turtles or birds. It is safe to use in areas such as ponds and bird baths where birds and turtles would be present.

4 of 4 people found this answer helpful.
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07/03/2015 Tanya from Rapid City Sd

QWill BTI Mosquito Dunks make my dog sick?
My dog drank from the water that I put a dunk in and now he is sick. Did this product do this?

ABTI Mosquito Dunks is labeled to be used in animal water troughs and are not harmful to animals. If your dog is continuing to experience any kind of sickness we recommend contacting your local veterinarian. You may need to refer to the MSDS when speaking with your vet.

1 of 1 people found this answer helpful.
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06/15/2015 Noel from Laramie Wy

QWill the active ingredient in Bti Briquets migrate from a pond to the underground ground water?
If so, then it could contaminate a water well in close proximity to the pond?

AThe BTI Briquets/dunks will not normally migrate anywhere it will simply slowly breakdown until gone in standing water areas where you dont want pest reproduction to occur. If any of the product did get into the water table somehow it would not be a problem as this product does not harm us and can be used in drinking troughs for animals, in ponds with fish being caught for consumption, and in rain barrels where the water is used to water vegetables.

2 of 2 people found this answer helpful.
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08/09/2014 Catherine

QAre BTI Mosquito Dunks product harmful to honeybees?

ANo, BTI Mosquito Dunks are not harmful to honeybees.

3 of 3 people found this answer helpful.
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07/08/2014 Matt from Hapeville, Ga

QIs it safe to use Mosquito Dunks in water barrels used to water fruits and vegetables

ABTI Dunks are not listed to be used in water barrels you will be applying to edibles. BTI dunks are to be applied to bird baths, old automobile tires, rain barrels, ponds, abandoned or unused swimming pools (particularly above ground types), ditches, tree holes, roof gutters for collecting rainwater, flower pots, animal watering troughs, waste water treatment plants, elevator shafts, basements that flood, sump pumps and any drainage areas within buildings -

2 of 2 people found this answer helpful.
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06/09/2014 Jerry from Grapevine, Tx

QCan I use BTI Mosquito dunks to control mosquitos in French drains?
I have a bad mosquito problem which I think is coming from my French drain system underneath my backyard concrete patio. There are 6 inlets, and it really seems that the problem is coming from the inlets. I have sprayed the rest of the areas with backyard control products that is supposed to last for a few months, and also have a mosquito misting system. The only pesky area is righty at our feet and it drives us crazy! I've used a little bleach in the drain inlets because someone told me that would help... Only worked for a few hours. The drains are those black plastic ribbed type and I'm pretty sure they nearly always have a little standing water in them due to the ribs. What's the best solution? Would crushed up BTI donuts work if I poured a few gallons of water after insertion to have it spread out down the pipes?

A

BTI Mosquito Dunks will be a great choice to apply in french drains for mosquitos. We recommend using Bifen IT and Pivot 10 on the exterior of the home as well as other non-chemical methods for eradication. I have included some great articles below that you might find extremely helpful!

 

Mosquito Articles

1 of 1 people found this answer helpful.
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01/31/2014 Ruth from Alamo, Tx

QDoes the BTI Briquets have an expiration date?
I found a box of these in a house I just bought, I wonder if they are still efective

A

BTI Mosquito Dunks should be used within 2 years of the date of purchase. It is also important to store BTI Mosquito dunks out of direct sunlight and heat so that the product will not degrade.

1 of 1 people found this answer helpful.
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07/30/2013 Alice from La Junta, Colorado

QWhat is the shelf life of BTI Mosquito Dunks?

ABTI Mosquito Dunks should be used within 2 years of the date of purchase. It is also important to store BTI Mosquito dunks out of direct sunlight and heat so that the product will not degrade.

3 of 3 people found this answer helpful.
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07/30/2011 Alan

QWhat is the weight of one BTI mosquito dunk?
I am trying to determine relative costs of dunks vs. granules

AOne single dunk weighs about 1/2 of one ounce.

2 of 3 people found this answer helpful.
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05/16/2011 Jo

QHow big is the BTI Mosquito Dunk?
I would like to know if it will be able to fit down a "bee hive" sewer grate.

AThe diameter of a BTI Mosquito dunk is about 2" and each dunk is about 1/2" thick.

2 of 2 people found this answer helpful.
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