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

I tried a bunch of stuff that didn’t work like sticky traps, cinnamon, mosquito bits, letting the soil get/stay dry, and the only thing that has worked is these nematodes. Cant believe how simple, easy, and quickly these got the problem under control. I just include a few little beads of them in the soil when I repot or sprinkle some and mix it into the top of the soil of an existing pot and all is well in my plant world now. Thanks for a good product

Better gnat control than anything else I have tried... and I have tried a lot!

Had a nightmare fungus gnat infestation, and in 4 weeks, not one gnat. An amazing product with no poison.

I have not been happy with this product. It is too expensive to end up with no progress in controlling fungus gnats. I followed the directions and have see no reduction in the fungus gnats. I had high hopes for this since I had tried other products first. I’m not sure if I received dead nematodes in my container but I sure didn’t notice any difference after using them.

The nematodes work as part of a multi-step attack on those annoying fungus gnats. It has to be reapplied, which is fine, and takes months to really work well. But it eventually does, especially with other remedies I will explain. I had tried literally everything, every tip, trick, potion, oil, repotting dozens of plants a couple times (not fun), pebbles along the top of the soil, even baking soil in the oven to a certain temperature. The bake was early on a few years ago and my house smelled like a campfire. Yeah, I had used a soil with too much wood product. Learned more about soil after that lol. So tried the nematodes and have reapplied and followed directions. They lessened and it took many months, but I still considered it a win. After decades of houseplants with never EVER having gnats, these fungus gnats now seemed unavoidable and I couldn’t figure out how to finally be rid of them. This product helped, along with bottom watering those plants that respond well to that type of watering. Using the nematodes, over time, has lessened the gnats. Adding both yellow sticky traps and a couple socket bug zappers (small that plug in at the electrical socket - bought a pair of zappers inexpensively along with the yellow sticky traps here on Amazon) have made the gnats ALMOST gone. All three have worked the best, together. At this point, the sticky traps gauge if gnats missed being stopped by the nematodes and bug zappers. If I have gone weeks with a clean yellow trap, I consider that success. They used to literally be loaded with gnats. Eww. Now I can see a couple gnats a month on the yellow traps. Some plants’ traps have none. The one for the money tree in the photo now catches more cat fur as there aren’t many gnats.😂 So I’d say this nematode product does work if used as directed and one allows lots of time. The other added items, for me, seemed to help a lot. Using any of the three alone likely won’t make a huge change (from my experience). This is why I rated 4 stars, as it could not eradicate them alone but do as part of a plan! Good luck!

Works great!! Had a major gnat infestation in large indoor planter and they’re gone after one week!

Helped on killing a lot of the gnats. I would definitely add another does next time. Plus adding silica to your soil helps in this process.

I used to purchase the live nematodes that come in powder form that you have to mix with water until I gave this a try. Now I just buy this whenever I have an issue with fungus knats in my house and within a few days it clears it up.

Useless product, more bugs in plants then before bcos of it’s moisture, absolutely no use,

Not bad