TreeHelp's two Bti based larvicides differ mainly in how fast they release their active ingredient and how much surface water each one covers. Mosquito Dunks release that ingredient slowly over about a month, while Mosquito Bits release it all at once for a faster knockdown of larvae already present.

What Do Both Products Have in Common?

Both products work the same way once applied: mosquito larvae must ingest Bti, a naturally occurring soil bacterium, before it affects them. The Centers for Disease Control and Prevention states Bti will not harm people, pets, other animals, aquatic life, or honeybees.

How Long Does One Treatment Keep Working?

Floated in a pond, birdbath, or livestock trough, Mosquito Dunks release Bti gradually and keep working for at least 30 days before needing replacement. One Dunk treats up to 100 square feet of surface water no matter the depth, which suits a water feature that is checked only occasionally.

What Gives Bits a Faster Initial Knockdown?

Granules that release their full dose of Bti on contact with water are the basis of Mosquito Bits, which kill existing larvae within 24 hours. An 8 ounce container treats up to 2,000 square feet, scaling to 1.8 acres from the 20 pound size, suited to a pond needing a quick larvae count reduction.

Which One Fits a Pond Better?

A pond with an ongoing mosquito problem benefits from both: Bits for an immediate reduction in existing larvae, then a Dunk floated in afterward for continued control as new eggs are laid. Reapplying Bits every 7 to 14 days keeps the faster acting treatment current between the Dunk's longer cycle.

Frequently Asked Questions

Is either product labeled for animal watering troughs?

Yes. Both are labeled for use in troughs, ponds, and birdbaths where animals drink or bathe, since Bti does not affect them.

Do either of these products harm fish or frogs?

No. Both are Bti based, and TreeHelp's own labels describe them as harmless to fish, frogs, turtles, and beneficial insects.

Which product treats a larger area?

Bits, by volume. A 20 pound container covers up to 1.8 acres, far beyond what a single Dunk is designed for.

Can Mosquito Bits be used for anything besides mosquitoes?

Yes. The same granules are labeled for fungus gnat larvae in potting soil, watered in as a diluted tea.

Are unused Dunks or Bits safe to store for next season?

Yes. Kept dry, unused Dunks retain their potency indefinitely, and Bits store the same way between mosquito seasons.