An excellent product for biological mosquito control.
Can be used safely in fish habitats, birdbaths, rain barrels or wherever standing water accumulates. This is not only important for human health but also bird health. A number of bird species have declined dramatically due to West Nile Virus. (Did you know Eastern Bluebird population is down 44% in the northeast because of this problem?). Active ingredient is bacillus thuringiensis. Dunk floats on  the water and will keep on working for 30 days or longer. Each dunk treats 25 to 100 square feet so you can break it up and use portions as needed in smaller areas.

• Pkg size 6'' x 6''
• Dunk size 2''
• 2 dunks per package