Household insects
Find research-based information on both helpful and harmful insects, spiders and other insect relatives.
Learn how to identify insect damage on plants and how to prevent and control common household insect infestations.
Insects and their relatives by category
This information is categorized by where a pest may be found in or around the home, the type of harm it might cause, and whether it is a true pest or a simple nuisance.
These insects and their relatives are found in and around homes and may bite or feed on humans and pets.
Find out how to treat fleas, lice, and scabies from the Minnesota Department of Health.
Some of these insects can seriously damage homes and property and may need professional pest control. Others, though not quite so damaging, can cause human health issues and may warrant active control measures.
Brown marmorated stink bug is an invasive species. These insects must be controlled and reported. The Minnesota Department of Agriculture may monitor them. Please report any BMSB you spot at .
True insects have six legs. These relatives have eight or (many!) more.
Some insects and their relatives cause no harm to humans, but they can be pesky. They often serve a purpose, such as controlling other insects. Tolerate them if you can. Control them when necessary.
You'll find these pests in cupboards and closets, on plants and in cold, damp corners. They infest flour, cereal, pet food, clothing, books and other materials.
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The University of Minnesota Extension yard and garden team uses research-based education to ensure beautiful and bountiful gardens that are environmentally sustainable. We educate the public about landscape design and plant selection, integrated pest management, and gardening best practices.