BTI Mosquito Dunks

$21.95 - $104.15

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5 out of 5 stars Rating: 4.8

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BTI Mosquito Dunks pack of 20 $21.95
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   46
4 stars   10
3 stars   2
2 stars   0
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Most Helpful Customer Reviews
  • 19 of 21 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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  • 13 of 14 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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  • 13 of 14 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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  • 10 of 20 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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  • 9 of 9 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
  • 5 of 5 stars  Good if your cats drink from your pond.
    By David in Salem Oregon on 08/29/2017

    This product works well if used before mosquito larvae grow into devils and leave the water. My cats drink from the pond with no ill effects (my veterinarian recommended the dunks), they are relatively inexpensive and one dunk for my 100 gallon back yard pond lasts almost a month.

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  • 5 of 5 stars  Perfect in every way!
    By Julia in Matador Texas on 07/31/2017

    It is always a pleasure to do business with DMO-- The service separates them from any competition they may have! I can always rely on expedited shipping, great communication and value- I've never experienced anything negative in any way with them-- total professionals! thank you!

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  • 4 of 5 stars  Great Value
    By Cameron in Fenton, MI on 07/18/2017

    Buying the case as apposed to the single sleeves of dunks was definitely the right choice. As a whole the mosquito dunks work pretty well. I have several contracts that if I did not have these I would not be able to keep up with the amount of mosquitos that live on/around the property. This product has saved my business both in cost of treatment chemicals, and man hours spent on site for treatment.

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  • 1 of 1 people found this review helpful:

    5 of 5 stars  This stuff works
    By J in Fremont, CA on 06/14/2017

    I put pieces of this all over my yard, in plant saucer, my fountain, birdbaths, any place water collects. I don't have a mosquito problem when I use it & get eaten alive when I don't. Shipping was fast. Everything went very smoothly. This is my second purchase from this company & certainly not my last.

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  • 0 of 1 people found this review helpful:

    5 of 5 stars  Dunks
    By Deb in Ontonagon, MI on 05/07/2017

    Great product, good pricing from this seller

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  • 1 of 1 people found this review helpful:

    5 of 5 stars  Works great!
    By Beth in Verndale Minnesota on 05/02/2017

    We live by a river and have lots of standing water around the river that is Mosquito Haven. This will be our second year using them. Safe for the fish too.

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  • 1 of 1 people found this review helpful:

    5 of 5 stars  Great product
    By Philip in Merrimack, NH on 04/11/2017

    Been using these for 3 years now. Drainage abutment around my property so standing water. Cuts way down on the mosquitos

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  • 2 of 2 people found this review helpful:

    5 of 5 stars  Dunks
    By Deb in Ontonagon on 09/28/2016

    I order several cases of these a yr. They sure make a huge difference in the amount of mosquitos we get, lots less & we have lots of standing water/small ponds & wetlands on our property near our home. Before the yrs. of dunks, there were days & evenings we couldn't go outside, they were that bad!

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  • 1 of 1 people found this review helpful:

    4 of 5 stars  Dunks to rid mosquitos
    By Gwyneth in Oklahoma City, OK on 08/29/2016

    I bought these dunks for my french drains. Easy to use

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  • 1 of 1 people found this review helpful:

    5 of 5 stars  BTI Mosquito Dunks
    By Katie in Wiscasset, Maine on 07/21/2016

    This site had the best price of the several that I searched. The Mosquito Dunks were recommended to me by our exterminator (he comes annually to spray for ants) because he told me he saw mosquito larvae in a rain barrel we have, and this was the product he recommended. They work fine as far as my limited knowledge goes. They disintegrate over time (some weeks), so you have to keep an eye on them, for replenishing.

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Most Helpful Q&A's

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.

54 of 54 people found this answer helpful.
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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.

53 of 54 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.

39 of 41 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.

21 of 23 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.

13 of 14 people found this answer helpful.
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Most Recent Customer Questions

09/26/2017 Sharon from Santa Ana

QDo I have to put another BTI Mosquito Dunk in after cleaning my pond?

A

Since the BTI Mosquito Dunks† dissolve in water, there is no need to apply another dunk in the water after cleaning the pond. Dunks last approximately 30 days.

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09/26/2017 Sharon from Santa Ana

QHow long will it take to work or see results after using BTI Mosquito Dunks?

A

After applying BTI Mosquito Dunks,† it takes approximately 48 hours to start to see results. If areas have a higher population of mosquitoes, it could take longer to see results. Please see our Mosquito Treatment Guide for more tips and product recommendations.

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09/05/2017 Vince from Kihei, Hi

QCan I use the BTI Mosquito Dunks in a taro pond?
I will be eating the taro that will be growing in the pond treated with the dunks. Will it be safe to eat the taro?

A

BTI Mosquito Dunks are not labeled for use in in taro ponds.† We recommend that you contact your local cooperative extension office for further recommendations.

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07/31/2017 Cheri from Branson, Mo

QDo the Mosquito Dunks have to float on the surface in order to be effective?
I wanted to suspend the Mosquito Dunks in a net weighted by a rock. This way I do not worry about it getting washed out of my rain bucket or my dogs getting it in their mouth. Will it work correctly this way?

A

No, The†BTI Mosquito Dunks†do not have to float on water in order to be effective and you can anchor them in the water as you have described.†

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07/18/2017 Cindy from Whittier, Ca

QHow many BTI Mosquito Dunks would I use for my 40 gallon fish tank?

A

BTI Mosquito Dunks are for outside use only and cannot be used in a fish tank.†

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07/14/2017 Mph from Layton, Ut

QI've read that it's OK for dogs to drink water containing BTI Mosquito Dunks, but what if they ingest and entire piece?

A

If your dog consumes a BTI Mosquito Dunk, we would recommend that you contact your vet.†

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06/25/2017 Rosa from Stamford

QIf I use BTI Mosquito Dunks in my barrel of water, will that water can kill my plants?
if i use this product in my barrel of water,that water can kill my plants?

A

No, water that the BTI Mosquito Dunks were used in will not harm your plants.†

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06/13/2017 Albert from San Antonio, Tx

QAre BTI Mosquito Dunks sold at Walmart in San Antonio, Texas?

A

BTI Mosquito Dunks†are a professional grade product and are not available in local retail stores. †There may be alternative versions of this product available, but we can not attest to the effectiveness of those products. †

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06/11/2017 Susan from Belfast, Me

QHow long does it take for BTI Mosquito Dunks to work?
I see mosquito larvae in my backyard pond (small).

A

BTI Mosquito Dunks will start working as soon as you place them in the water areas where mosquito larva can be found. It will slowly start breaking down and creating a layer on the water that should prevent the mosquito larva floating there from becoming adult mosquitoes.†

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06/08/2017 Kelli from Dallas, Tx

QWill a Mosquito Dunk work by the faucet on my deck?
It is not underwater but is wet underneath.

A

BTI Mosquito Dunks†need to be placed in standing water to be effective. If you need to treat the ground where water occasionally collects in pools or puddles, then we would recommend using Altosid Pro-G instead.

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