PK-AR10 · Spiders, scorpions, and mites
How to get rid of Clover mites
Bryobia praetiosa
Clover mites are tiny red plant mites that invade sunny south and west walls in huge numbers, then stain red if crushed on curtains. They do not bite people. Control is a plant-free or gravel inspection strip at the foundation, exclusion, and vacuuming — not crushing on upholstery. They are not chiggers (those bite in grass). Lawn-heavy foundations in spring are classic.
How to identify Clover mite
- Minute, reddish, front legs very long, on siding and windowsills.
- Red smear when crushed. No itching bites.
Signs of an infestation
- Red moving dust on a sunny windowsill.
- Stains on curtains.
Biology and why they show up
Plant feeders. Mass movements to structures in weather transitions. Outdoor populations in turf and clover.
Health and property risk
Stains. Nuisance. Not a medical mite.
Proven control sequence
Work in this order. Skipping inspection or exclusion is why most “treatments” bounce back in a week.
- Create a dry plant-free band at the foundation. Gravel strip. This is the classic extension advice.
- Vacuum, do not smear. Stains. Empty outside.
- Exclusion on sunny windows. Weatherstrip.
Matching tools for these steps can be bought on Amazon. Buy the field kit.
Tools for clover mites on the sunny foundation
They leave red smears on sills in spring. A plant-free band and a sealed window stop beat indoor spray.
As an Amazon Associate, Pest Kill earns from qualifying purchases. The EPA label is the law for any pesticide. These links match the sequence on this page — they are not a shopping list instead of identification. Details: advertising disclosure. Browse the full tools catalog.
Hardware
Door and window weatherstripping
Stink bugs, lady beetles, and cluster flies use the same leaky envelope as a draft. Replace flattened foam at the stop. Pair with a door sweep on the sill gap.
Hardware
Exterior sealant for gaps and joints
Seal utility penetrations, trim joints, and hairline gaps after you know nothing is trapped inside. Sealant without mesh is not a rat patch. Keep it off weep holes that a wall needs to drain.
Prevention that actually sticks
- Do not plant heavy turf against a south wall if you have annual invasions.
- Screens.
When to hire a licensed professional
Rarely. Landscape redesign if chronic.
United States and Tier 1 notes
Spring in much of the US. Dramatic on light-colored sunny walls.
Common questions
Are they baby ticks?
No. They stain red and come from turf. Ticks have different body plans and bite.