I've been struggling with a serious fungus gnat infestation and I'm ready to take strong measures. So far, I've tried shaking Sevin granules on top, applying Sevin spray to the soil, and dissolving mosquito bits in water to mix into the top soil. I've also attempted spraying neem oil. Although flypaper and yellow sticky traps have been somewhat effective, they just can't keep up with the problem. I've reached a point where I'm considering removing the top layer of soil, applying a mix of chemicals and water, and then covering it with plastic wrap. I'm really looking for a strong solution here—any suggestions?
3 Answers
Mixing Sevin with other pesticides isn't advised, as it can be damaging. Stick with mosquito bits and nematodes. Also, consider adding trays under your plants to bottom water instead. Repotting plants that harbor more pests can really help. Keep those sticky traps going, too!
Be careful with Sevin—it's likely to harm the beneficial nematodes. I’ve had luck with mosquito bits in every bit of water I use for my plants, whatever method I choose. I often use bug zappers to alert me when gnats show up; they help me stay on top of the issue.
That was my worry! I also use distilled water for my plants, so I'll make sure I replace my soil with fresh stuff.
Good tip on the watering!
Avoid Sevin because it kills beneficial nematodes. Your approach with mosquito bits and sticky traps is solid. Just remember to saturate the soil when applying BTI, as larvae can hide deep. If your soil retains too much moisture, consider repotting in a more well-draining mix.
If you're looking for convenience, check out Microbe-lift BMC. A few drops in a gallon of water for every watering does the trick.
That’s some great advice, thanks!
Thanks for the heads-up!