Fungus gnats in houseplants can be a persistent nuisance, but thankfully, there are many effective strategies for how to get rid of fungus gnats in houseplants. These tiny, dark, flying insects are often mistaken for fruit flies, but they have a particular fondness for the damp soil of your beloved indoor greenery. While the adult gnats are mostly just annoying, their larvae can actually cause damage by feeding on plant roots, especially in seedlings and young plants. Let’s dive into how to tackle this common houseplant pest.