Expert Advice on Preventing Gnats Indoors and Outdoors Gnats may be tiny, but their constant buzzing and sudden swarms can make life indoors and outdoors frustrating. They thrive in damp environments, decaying organic matter, and areas with standing water, making kitchens, bathrooms, and gardens particularly vulnerable. Homeowners often try various DIY methods to eliminate them, but prevention is the most reliable approach. Whether you’re...