Mosquito Dunks, 20-Pack is a pack of 20 mosquito larvicide dunks that use Bti (Bacillus thuringiensis subspecies israelensis), a bacterium toxic only to mosquito larvae. Each dunk treats 100 square feet of surface water for 30 days or more. Key Features Non-toxic to all other wildlife, pets, fish, and humans. Simply apply Mosquito Dunks® to any standing water, or water garden. Kills within hours, lasts for 30 days or more. Labeled For Organic Gardening by the USEPA. Highly effective low impact product Bti Targets Mosquito Larvae Before They Can Bite Bti is a bacterium toxic only to mosquito larvae. It kills them before they are old enough to bite, which reduces adult mosquito populations. It works on the larvae of all roughly 2,500 mosquito species. Where the Dunks Can Be Used Water troughs Koi ponds Birdbaths Rain barrels Flower pots Gutters Any place where water collects and remains for periods of time A dunk can be broken into smaller pieces for less water coverage. Additional Safety Information Bti is non-toxic to birds and most other non-target organisms. The EPA has registered the dunks for use in animal watering troughs and fish habitats. The dunks are approved for organic production and gardening under the National Organic Program guidelines. A dog that eats an entire dunk is not adversely affected, per the page. Specifications Pack size: 20 dunks Active ingredient: Bti Coverage: 100 square feet of surface water per dunk Duration: 30 days or more
