Knowledgebase
Beetle? #944418
Asked September 07, 2026, 11:23 AM EDT
Washington County Minnesota
Expert Response
Thank you for reaching out.
That is a fulvous harp ground beetle. It is a beneficial insect for plants as it preys on aphids and caterpillars. Here’s how you can deal with them:
Prevention and Exclusion
Seal cracks: Caulk gaps around doors, windows, and foundation penetrations using exterior sealant.
Modify lighting: Switch bright white exterior lights to yellow bug bulbs, as white light attracts them at night.
Clear borders: Create a clean perimeter by removing heavy mulch, leaves, and dense vegetation directly against the house foundation. [1, 2]
Indoor and Outdoor Treatments
Diatomaceous earth: Sprinkle along baseboards, entryways, and window sills to dehydrate wandering bugs.
Barrier sprays: Apply a residual outdoor perimeter insecticide or a professional along the foundation and thresholds.
Vacuum: Remove indoor stragglers quickly using a vacuum cleaner or broom.
If you decide to use the pesticides, be sure to read and follow all label instructions.
I hope this helps!