BTI Mosquito Dunks

Pesky mosquitoes love to live and breed in damp and wet areas where there is little or a lot of standing water, such as ponds, flower pots, ditches, flooded basements, or drainage areas. 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 which are known or suspected to become breeding sites when flooded, such as woodland pools and 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, ponds, 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 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.

• 5 of 6 people found this review helpful:

    Mosquito Dunks Work for Our Large Pastures
  By Donna on September 5, 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?

  Was this review helpful to you?  

• 3 of 4 people found this review helpful:

    Control those mosquitoes
  By Ona on May 3, 2010

  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.

  Was this review helpful to you?  

• 3 of 3 people found this review helpful:

    Mosquito Dunks
  By Leslie on June 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!

  Was this review helpful to you?  

• 2 of 2 people found this review helpful:

    Night time's pond
  By Roger on June 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.

  Was this review helpful to you?  

• 2 of 2 people found this review helpful:

    BTI Mosquito Dunks
  By Terry on April 28, 2010

  I've been using them for ten years in my rain barrels (have 6). They work very well. DoMyOwnPestControl has the best price and excellent service.

  Was this review helpful to you?  

•   The county uses these
  By TR on April 11, 2013

  I work in the local county health department and know that the Environmental Health Division of the health dept. uses BTi mosquito dunks exclusively in their mosquito abatement program. They do not spray chemicals in the mosquito breeding waters. They only use BTi mosquito dunks and the guys there tell me that BTi mosquito dunks are appropriate for organic standards and that the dunks only target mosquito larvae and no other insects. I hope that's true.

  Was this review helpful to you?  

•   BTI Mosquito Dunks-CASE (100 dunks)
  By Joanne on November 16, 2012

  We have a daylily farm and grow daylilies in pots with frames built for holding water so the daylilies can be watered from the bottom. We had huge problems with mosquitoes this year, and several of our friends have contracted West Nile Virus in Middle Georgia. We ordered the case of BTI Mosquito Dunks, and have been able to eradicate the mosquito problem. We don't have to worry about poison . They are safe for the animals, and we even have some in the bird baths. Very good product with excellent service from Do My Own Pest Control.

  Was this review helpful to you?  

•   Patsy
  By Patsy on September 24, 2012

  These work!!!Have been using for years, but just recently ordered on line. Great service, fast delivery. More people should learn about using the BTI Mosquito Dunks. Thanks for a very workable product.

  Was this review helpful to you?  

•   BTI Mosquito Dunks
  By Becca on September 21, 2012

  I have a fountain and 2 bird baths in my yard. I place a 1/4 pie of these dunks in each and it keeps the mosquitos from laying egggs and the larva hatching. I am glad I found them. This allows me to keep the birds eating the mosquitos and the standing water free from the mosquito reproduction.

  Was this review helpful to you?  

•   BTI Mosquito Dunks
  By D on September 8, 2012

  Got rid of the critters in 24 hours in my rain barrels. Thanks

  Was this review helpful to you?  

•   MOSQUITO DUNKS WORK
  By Ben on August 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!

  Was this review helpful to you?  

•   They work
  By Rob on July 7, 2012

  Had a bird bath full of squirming larvae, put in a quarter of a dunk and next morning not a trace. How good is that?

  Was this review helpful to you?  

•   Very good product!!
  By Nancy on June 28, 2012

  We put them in the stock tanks that we have close to our house. Those tanks are usually teeming with mosquito babies! We completely emptied the tanks, filled them back up, put the dunks in and NO MOSQUITOES!! It is a very dry year here, but I was afraid the mosquitoes would be worse next to the house, since we have all of the standing water in those tanks, but I have only seen 1. I was very pleased with how well these worked. Our dogs did like to pick them out of the tanks, since they float. The dogs didn't seem to have any ill effects, but we decided to put something heavy on it in the bottom of the tank so the dogs couldn't get to them.

  Was this review helpful to you?  

•   Mosquite Dunks
  By Pat on June 22, 2012

  With all the rain we have been getting we have ponds all over our property. The temps have started to warm up now. We have used the mosquito dunks in the past and they work GREAT.... thank you again for such quick response. I received my order in just days.

  Was this review helpful to you?  

•   Excellent
  By Margaret on May 13, 2012

  Excellent. The product is as promised, and the delivery was quick.

  Was this review helpful to you?  

See all 20 reviews »