Directions for Use:
These briquettes/dunks may be used in all types of mosquito breeding areas. To prevent briquettes/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 briquettes/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 briquettes will float to the surface when flooding occurs and start releasing the active Bti material. Alternate wetting and drying will not reduce their effectiveness.


Mosquito Larvae:
Flooded larvae breeding sites: Use one (1) Summit B.t.i. BRIQUETTE/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 briquette/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. BRIQUETTE/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. BRIQUETTE/DUNKS to each 100 sq. ft. of Cooler box or for smaller Coolers refer to the table below for application rate.