I've recently repotted all my plants, but I'm still seeing some little gnats flying around. I'm not sure if they're coming from my plants, but I want to make sure to deal with them effectively. I'm starting to set up some traps, but I'd love to hear your tips on how to prevent or eliminate these pesky fungus gnats!
4 Answers
The main issue is usually wet soil, so consider watering less if you can. Sticky traps will help over time, but remember that they mainly catch the mature gnats while eggs may still linger in the soil. Soak some mosquito bits in your watering can as well and use that to water your plants—it's worked for me!
You might want to try Gnatrol, which has three times the concentration of mosquito bits but is actually more cost-effective. It's a strong solution against those little pests!
A great way to tackle this issue is to use mosquito dunks or bits. Just toss them in a gallon of water and let it sit overnight, then use that water for your plants. This will kill the larvae and help break their life cycle, but be patient! Also, keep some sticky traps handy for the adult gnats.
After repotting, I started putting sticky traps in my pots to catch the adults and began bottom watering with a 2% hydrogen peroxide solution. This mix kills any eggs in the soil. I also topped my pots with LECA to make it harder for adults to lay eggs, and I have a fly zapper running all the time to catch any strays!