Summit Chemical Co. Mosquito Dunks - Kills mosquitoes before they are old enough to bite. Made with Bt-israelensis (Bt-i), a highly specific biological bacterium that kills mosquito larva within hours. This product will not harm people, pets, wildlife or fish. It is very simple to use, place one dunk per month in areas where water accumulates such as ponds, rain barrels or ditches. It can be used as soon as mosquito larvae are seen in early spring, keep using all summer. Larvae are present until the end of the summer season.

• Coverage: 1 dunk per 9.2 m2 (100 ft2) of surface water
• Use on land locked water only. Excellent in wet lands that dry in the summer- they will reactivate when rain comes
• Repeat application every 30 days
• Dunks can be broken into smaller pieces for small applications
• Registered for sale by Healthy Canada Pest Management Regulatory Agency and deemed Fit for Organic production by the USEPA in accordance with the USDA’s National Organic Program (NOP