ENTOEND Fungus Gnat Killer - Pesticide Free Diatomaceous Earth Plant Insect Killer, House Plant Bug Killer. Plant Safe, Eco Friendly Barrier Grit for Plants. Stops Root Damage, 1L Recyclable Pouch

Had a stubborn fungus gnat problem with my office plant (for months on end) and this finally fixed it. I started with the sticky pads, which got hundreds, but there were still a stubborn contingent that remained. I used this soil topper in tandem with some of the sticky pads, and I think this is what has finally worked.A few notes:* Make sure you use enough. I put a thin layer in, and it didn't work. I only got proper results when I put maybe 2-3 cm in (you need more than you think).* I made the mistake of watering from the top (over the soil topper) rather than the bottom. Don't do this -- it did damage the plant a bit and I lost some of the lower leaves.

Works quite well took a few days to kick in but haven’t seen hardly a fly since using it

Fungus gnats are quite pathetic as far as flies go, they can’t even really fly that well. So it’s a bit of an embarrassment that they managed to take over so many of my houseplants. Vastly irritating, very proficient at laying eggs (200 a pop, apparently, outrageous!).Tried the yellow sticky things, spray and pesticide that claimed to kill them and the eggs. No luck, they kept coming. It was like Helms Deep. What can men do against such reckless hate, indeed. After weeks was on the verge of throwing the plants out. Tried this as a Hail Mary - worked within a couple of days. You need to add a generous layer, probably more than it says on the back, and just bear in mind you’ll need to water from the bottom or get one of those pépettes to make sure the plant is getting something. But since using this I haven’t seen any more of these jokers, and it’s removed their ability to lay eggs in the soil.Presumably there’s some sort of fungus gnat burial ground under the topping now, which I’m not super excited to reveal. But I actually don’t mind the aesthetic of this stuff at all so will likely leave it and just pretend it’s not there.

Very expensive and still takes months and months to get rid of gnats, even using traps. Can't really tell if this has made any difference. You have to water from the bottom once you use this otherwise it gets damp and doesn't dry.

Like some other reviews say use a but more than the instructions say. Got rid of the flies instantly.

I bought a number of bags to help with a fungus gnat infestation, which it seemed to help for a couple of weeks. However, the topper is now crawling with fungus gnats, sticky traps are full within a day and I’m close to just throwing away the plants and replacing with artificial

It works well and is easy to put on and adds a nice finish to the pots

I bought two bags of this. Works out expensive as it didn't go far. I have lots of house plants. Ended up having to buy a 5l tub from another seller. Hope it works to keep my fungus gnats away. Easy to use. I've watered plant from water in the tray so the gravel stays dry.