Sometimes, despite your best efforts, gnats just keep coming. This is when you bring out the fogger or a commercial spray made for flying insects. But honestly? That feels like overkill for a few tiny flies. Instead, try a DIY spray: mix 1 part hydrogen peroxide with 4 parts water, and spritz the soil of your infested plants. It kills larvae without hurting your plant. Or, use a fan. Gnats are weak fliers (drama queens, really). A simple desk fan pointed at your kitchen counter will ground their fleet.
Here’s the tough love part: if you have tons of houseplants, consider repotting them with fresh, sterile soil. Fungus gnats love to hitch a ride in bagged potting mix. Bake the new soil in the oven at 200°F for 30 minutes before using it. Yes, it smells earthy. No, your housemates won’t understand. But you’ll be gnat-free.