This strain of Bacillus thuringiensis
(Bt/H-14) provides very effective fungus
gnat control for houseplant growers and home
greenhouses. Populations of fungus gnats (often
called “fruit flies”) usually peak during winter and
spring. The tiny adult insects lay their eggs in peat
moss, humus-rich organic soil and potting media. The
larvae then feed on plant roots, including those of
With Knock-Out Gnats, the larvae ingest the
larvicide and die! The water-dispersible granules
are convenient to use!
Sorry, Knock-Out Gnats
Granules cannot be shipped to NY or WA.
If you're not happy with any item you order from us, notify us anytime within 30 days after receipt of merchandise. We'll immediately mail you a merchandise certificate you can use to purchase another item of your choice. Your complete satisfaction is guaranteed!