So theoretically the fungus gnats will disappear after some time in dry soil. True?
I have some in my tomatoes. I was planning on reusing this soil as a filler with fresh soil for later plantings. If I do indeed let this dry out for some time will ALL the larvae be destroyed?
I just keep getting them back I don't now where they are coming from.
I may just save this soil for outside plants later in the season not for indoor starters and such. Or it may go in the garden/compost. I have several 5 gallon buckets worth so it's not going to waste.
- gixxerific
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I would say yes, gixx, let the soil dry then reuse it. I keep all of my plants a little on the dry side and never have fungus gnats. The eggs and larvae require moist conditions to survive. Fungus gnats are, to me, like "No-see-ums". If conditions are right, they're just gonna appear, and you'll never even see the first few adults come around to lay the initial batch of eggs. 

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