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Would a venus fly trap help deal with house gnats?
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this post was submitted on 19 Jul 2023
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There are a few practical management steps you can take as well to help reduce the gnat load.
Sand (washed playground sand as an example) as a mulch layer over the top of the potting mix will drain quickly and removes the gnat's preferred habitat for egg laying.
Bottom watering, while admittedly slower than pouring from the top, also helps to reduce the amount of time the top layer of soil is wet enough for them. Allowing the potting mix to dry thoroughly between waterings improves the efficacy of this practice.
I knew about sand but not bottom watering! Thank you for the info!