This 6-ounce bottle will treat a 750-gallon pond for 22 months. Or a treat a 2,500-gallon pond for 7 months. Microbe-lift biological mosquito control can be applied to areas that can contain aquatic life, fish, and plants. This mosquito control product can also be applied to areas used by or in contact with humans, animals, horses, livestock, pets birds, or wildlife. Biological larvacide, bacillus thuringiensis subspecies israaelenses (B.T.I.) Is the active ingredient). Can be used in water gardens that contain live fish and plants. Up to 14 days of activity depending on the application site. Disperses evenly in water. No fish toxicity. No toxicity to non-target invertebrates. No potential for resistance development in the target mosquito population.