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 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.