Place Mosquito Dunks in ponds or standing water and its active ingredient, Bacillus thuringiensis subspecies israaelenses (BTI) kills mosquito and black fly larvae for 30 days or more. While floating, they slowly release a long term biological mosquito larvacide killing the larvae before they hatch into adults. This will not affect fish, plants, people or wildlife. Alternative wetting and drying will not reduce its effectiveness. Use one dunk per 100 sq. ft. of water surface.

Features:

• Two Dunks per card
• Floats on water
• Will keep on working for 30 days or longer
• Slowly release a long term biological mosquito larvacide
• Will not affect people, fish, wildlife or plants