The Environmental Factor NemaKnights Slow-Release Nematodes - Biological Pest Control for Fungus Gnats, Thrips, & Whiteflies, Easy Shakeable Granules (280g, Treats Up to 50 Planters)

I only used maybe about 2 teaspoon of Nematodes in my pot and waiting a month, all Fungus Gnats were gone. Great product. I stored the rest of the container in the fridge and will use it again if Fungus Gnats ever come again.

Great product! Really helped control the gnats.

I got these to control thrips and fungus gnats. It does not work for either one. After multiple applications over several weeks, the numbers are not reduced, there are still new thrips emerging from the soil unharmed. I don't think there were any live nematodes in this, maybe it got too hot, maybe it was too old, I don't know, but there was nothing alive here. They did absolutely nothing. All the bugs they supposedly target are thriving after weeks of repeated application and careful nurturing of the soil so as not to harm the nematodes. Stopped by to write the review because I am back here searching for something that actually works, because these codes do not seem to be alive upon arrival. PS, I've been keeping the open container in the fridge, the beads are still moist, everything appears normal except there's nothing alive to infect, or so it appears. This is an indoor and controlled environment, I don't think they're alive.

I have been having a terrible fungus gnat problem in my basement grow tent for awhile now due to big box store soils, the included photo is a carnivorous butterwort that has been feasting on this infestation (as shown on the older leaves that are absolutely coated in them), I applied this product in some basil I have been trying to overwinter a few weeks ago, the fungus gnat infestation has been devistated since then, as shown on the newer leaves on the butterwort (virtually clean), this product does not get rid of the adult fungus gnats however, so you will still need a solution for that whether it be carnivorous plants, or sticky traps.

The product works but not as well as advertised. It requires more applications, which uses more product.

Perfect!! Something that , finally, kills thrips (and other root eaters). Easy application, quick results.

They worked kind of... I had yellow sticky paper also. Unfortunately the gnats killed all 10 of my strawberry plants within a week. I noticed a decrease in the problem, but it didn't get them all. I ended up using hydrogen peroxide with water on another plant. I think the peroxide might work better seeing as they're gone after 5 days of application.

First product to help rid my house plants of fungus gnats and I have tried many. Now I use on regular basis as prevention