Bests & Worsts Reviews from Amazon

These definitely catch annoying fungus gnats. I have used some gnat killer spray directly to the soil to kill the gnats but after one of my succulents died after using it I was hesitant. My local nursery recommended these traps and prefers them over the spray. While I don't feel they get rid of the problem completely I have found other ways to eliminate them in conjunction with these traps. I add pretty pebbles to the top of the soil. I have found the cheapest place to purchase with the most quantity is aquarium rocks from pet stores. I purchased a 20 pound bag for $20.00 and it helped cover my 50 pots with plenty left over (you can purchase smaller bags as well)! These pebbles help create a barrier from gnats getting to the soil to lay eggs and creates a barrier from hatched gnats to get out. Just make sure to cover the soil completely! I also make sure to put the yellow traps on the bottom notch as they fly low. I have found I catch more when they are placed lower rather than higher. This has helped eliminate those annoying gnats!