With the cold, wet weather across Metro Detroit, some residents have noticed tiny black bugs jumping around on snow and sidewalks.
Those creatures are called “springtails,” also known as “snow fleas.”
Though their name sounds alarming, experts say they are completely harmless.
David Lowenstein, PHD, a consumer horticulture educator with Michigan State University Extension, explained that springtails are insect-like organisms that feed on organic debris such as leaves, moss, and algae.
Unlike most insects that hibernate in winter, springtails remain active during cold weather, taking advantage of winter thaws to feed on snow surfaces.
People often worry about the name “snow fleas,” but Lowenstein reassures that these bugs pose no threat to humans.
They do not bite, cause skin irritation, or invade homes or pets.
The nickname comes from their impressive jumping ability.
Snow fleas can jump two to four inches—many times their body length—using a special appendage.
Some people have also spotted springtails indoors, especially in kitchens and bathrooms.
While winter-active species are usually found outdoors, other springtails are attracted to moisture and warmer indoor environments.
They often enter through small cracks, gaps, or vents and gather near sinks or bathrooms where moisture is present.
Lowenstein emphasized that these bugs are harmless and temporary visitors.
If found indoors, wiping them away with a wet rag is sufficient.
Outside, springtails are simply a quirky part of nature to observe and appreciate during the winter months.