Summit Mosquito Dunks

The dunks contain BTI (Bacillus thuringiensis israelensis), a naturally occurring bacteria. When placed in water, the dunk releases this bacteria, which mosquito larvae ingest and then die from, without affecting other organisms.

Yes, they are safe for pets, wildlife, and fish. The active ingredient specifically targets mosquito larvae and does not harm birds, fish, pets, or beneficial insects like bees.

One dunk treats up to 100 square feet of water surface area for 30 days. For smaller features like birdbaths, you can break the dunk into smaller pieces to avoid over-treating the water.

No, these dunks only target the larval stage of the mosquito life cycle in standing water. They will not kill adult mosquitoes that are already flying around, but they will significantly reduce the population over time by preventing new generations from hatching.

You don't necessarily have to remove the remnants, but the dunk will stop being effective after 30 days. It is best practice to remove any remaining debris and replace it with a fresh dunk to maintain continuous control.