Indeed, National Gardening Association forum member Linneaj suggests freezing then baking potting soil to kill fungus gnats — ...

These tiny, mosquito-like bugs can be a major nuisance. Use these tips to banish fungus gnats from plants for good.

When was the last time you repotted your houseplants? If it’s been a while, take a look at them and see what they’re trying to tell you. [...] ...