Springtails are tiny insects that appear in huge numbers in damp soil, mulch, and around moist indoor areas. Harmless but alarming in their sheer abundance, they are a common moisture-driven nuisance around Whidbey and Fidalgo homes.
How to identify springtails
Minute, 1/16 inch or smaller, gray to dark, with a forked structure that lets them jump when disturbed — often mistaken for fleas because of the hopping.
Behavior & season on Whidbey & Fidalgo
They feed on mold and decaying organic matter in consistently moist areas — potting soil, mulch, crawl spaces, and around sinks and drains. Numbers explode in wet conditions.
Why springtails are a problem
They do not bite, damage property, or spread disease. The problem is purely their overwhelming numbers indoors, which point to a persistent moisture or mold source.
Signs of springtails activity
- Clouds of tiny jumping insects in damp areas
- Numbers around sinks, drains, potted plants, and crawl spaces
- Sudden appearance after wet weather
- Concentrations where mold or dampness exists
How Salty Dog treats springtails
We identify and reduce the moisture and organic matter sustaining them and treat harborage so the population collapses. Learn more about our Crawl Space Restoration service, or browse the full Pest Library.
Reviewed by Matthew — Salty Dog Pest Control. WSDA-licensed structural pest applicator (License #101709). Veteran- and family-owned, serving Whidbey Island, Fidalgo Island, and west Skagit County.
Frequently asked questions
Are these fleas?
Springtails jump like fleas but do not bite. If tiny hopping insects appear around damp areas rather than on pets, they are almost always springtails.
Why do I suddenly have thousands?
They bloom in wet conditions on mold and decaying matter. Their numbers signal a moisture problem that needs correcting.
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