Knowledgebase

Bugs in Basement #922757

Asked December 09, 2025, 9:41 AM EST

Bugs found in basement at walkout door.

St. Mary's County Maryland

Expert Response

These look like springtails, a harmless insect relative. They require damp or humid areas so they don't dehydrate (they usually live in soil), and they feed on organic material like fungal spores, algae, mold, etc. If they remain abundant, there may be moisture issues to address, like condensation, a water leak, or a nearby water source (sump pump or drip pan under an appliance, perhaps). Or, they are merely wandering inside during dry weather and sealing gaps/cracks or checking for worn-down door or window weather-stripping may be enough to discourage them from coming back in.

Miri
Answered by the Home and Garden Information Center (HGIC), University of Maryland Extension. For timely gardening information and tips, subscribe to our Maryland Grows blog and quarterly newsletter. Follow us on Facebook, Instagram, and YouTube. Replied December 09, 2025, 10:03 AM EST

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