Summit Mosquito Dunks & Mosquito Barrier

The Dunks are a biological larvicide designed to kill mosquito larvae in standing water, while the Barrier is a topical insecticide meant to repel adult insects from your lawn and vegetation. Using both provides a dual-action defense that stops mosquitoes from breeding in your yard while preventing adults from settling in your foliage.

Yes. The active ingredient in the Dunks, BTI, is a naturally occurring bacterium that specifically targets mosquito larvae. It is non-toxic to fish, pets, birds, and other wildlife, making it safe for use in ponds or birdbaths.

The Mosquito Dunks remain effective for up to 30 days in standing water. The Mosquito & Gnat Barrier provides a residual effect that lasts for up to four weeks after application, depending on weather conditions.

No extra equipment is required. The 32-ounce bottle comes with a pre-calibrated hose-end sprayer, so you simply attach it to your garden hose and spray the solution directly onto your lawn, shrubs, and other vegetation.

Yes, this product is labeled for use in organic gardening applications. However, as with any insecticide, avoid spraying directly onto edible crops or flowers where pollinators are actively foraging.

One Mosquito Dunk is effective for up to 100 square feet of surface water. For smaller containers like birdbaths or rain barrels, you can break the dunk into smaller pieces to treat the area appropriately.