Spiders, ants & crawling insects
Clover mite control in Salt Lake City, UT
Tiny red specks crawling across the windowsill by the thousand every spring. Clover mites live in the lawn and climb sunny walls to get inside, and the fix starts where grass meets the foundation.
Most active
- Spring
- Summer
- Fall
- Winter
Quick answer
Clover mites are tiny red mites, about the size of a period, that live in lawns and crawl up sunny walls into homes in spring and fall, often by the thousands. They don't bite and aren't a health threat, but they leave red stains when crushed. Control means treating the foundation, the base of the walls and the lawn edge, and creating a grass-free strip along the house.
At a glance
- Best for
- Red mites on windowsills and sunny walls
- Peak season
- Spring, with a smaller wave in fall
- How it works
- Treating the foundation, wall base and lawn edge
- Key fix
- A grass-free strip along the foundation
Overview
Why they're on your windowsill
Clover mites feed on grass and clover, and they're most common in lush, well-fertilized lawns that run right up to the house. In spring, they climb the sunny walls, especially south and west, and slip in around windows and doors.
Once inside they don't breed or feed, and they die off in days. The problem is numbers: hundreds or thousands at a time on sills and window frames, and red smears when anyone tries to wipe them up.
The most effective fix is at the lawn edge. A treatment along the foundation and wall base, plus a strip of gravel or bare soil between the grass and the house, cuts off their route.
What it covers
Clover mite work we do
Spring invasions on windowsills
Treatment of sunny walls and window frames where mites climb in.
Turf-free buffer strips
Advice on a grass-free strip between the lawn and the foundation.
Wall and foundation treatment
A residual treatment along the foundation, wall base and lawn edge.
Before we arrive
Before your clover mite treatment
- Point out the windows where mites show up most.
- Close windows on treatment day.
- Unlock gates to the sunny side of the house.
- Hold off on mowing or fertilizing along the foundation for a day.
- Keep pets inside until treated areas dry.
- Vacuum mites indoors instead of wiping them.
- Tell us about vegetable beds near the foundation.
- Note where grass runs right up to the siding.
How the visit goes
How the visit goes
Check the lawn edge
Where grass, clover and weeds meet the foundation.
Treat the foundation and wall base
A residual band where mites climb.
Treat around windows
Frames and sills on the sunny sides.
Recommend a buffer strip
Where a grass-free strip will help most.
Plan for fall
A lighter check if mites return in autumn.
Salt Lake conditions
Clover mites in Utah lawns
USU Extension describes clover mites as about the size of a period, living mainly in turfgrass and migrating indoors in late spring and fall, often up exterior walls and through windows in the hundreds or thousands. They stain fabric when smashed but aren't a health threat. The recommended fix is a turf- and weed-free strip 3 to 5 feet wide around the building, which in a typical Salt Lake yard means pulling the lawn back from the foundation.
Newly sodded lawns that run right up to the siding are the most common setup we see.
Sources: extension.usu.edu
Warning signs
Signs of clover mites
Sign 01
Tiny red specks on sills
Moving red dots on windowsills and frames, mostly on sunny sides.
Sign 02
Red streaks when wiped
Crushed mites leave red-orange stains on sills, curtains and walls.
Sign 03
Grass up to the foundation
Lush lawn running right up to the siding.
Sign 04
Worse on sunny days in spring
Warm spells bring the biggest waves.
Sign 05
Back every spring
Repeat invasions mean the lawn edge hasn't changed.
Your options
Clover mite options
| Option | Best for | Trade-off |
|---|---|---|
| Foundation and wall treatment | Active invasions | Needs repeating each spring |
| Grass-free buffer strip | Long-term prevention | Changes to landscaping |
| Indoor vacuuming | Mites already inside | Removes them without stains, no prevention |
Cost
What clover mite control costs
Priced like a light exterior treatment.
Published range
A general exterminator visit typically runs about $100 to $260. Source: angi.com, checked September 2026.
Wall and lawn edge length
More sunny wall and lawn edge means more to treat.
Timing
Early spring treatment is lighter than an established invasion.
Landscaping
Grass up to the foundation keeps pressure high.
Repeat visits
Some homes need a fall check too.
Plan or one-time
A spring visit on a quarterly plan covers it.
Do it yourself?
What helps with clover mites
What you can do today
- Pull the lawn back and add a gravel strip along the foundation.
- Vacuum mites with a crevice tool.
- Seal gaps around windows on the sunny sides.
- Go lighter on fertilizer along the foundation.
What to leave alone
- Wiping or crushing mites on sills and curtains.
- Letting grass and weeds grow against the siding.
- Using indoor foggers.
- Waiting until the mites are inside to act.
Timing
What to expect
- Same weekMites on treated walls and edges die off.
- Two weeksIndoor sightings drop sharply.
- SummerClover mites go quiet in the heat.
- Fall and next springA buffer strip and a spring visit keep them down.
Fix the lawn edge
Clover mites live in the grass. A strip between lawn and foundation stops most of them.
Call (801) 516-0135Lawns that run right up to the siding feed clover mites.
For spiders, ants and other crawling insects we choose from product lines like these, matched to the pest and where it hides.
- Demand CS
- Suspend PolyZone
- Temprid
- Tempo
- Alpine WSG
- Advion
- Maxforce
- Gentrol
FAQ
Clover mite control questions from Salt Lake homeowners
Still unsure? (801) 516-0135 is answered around the clock.
No. They don't bite people or pets and aren't a health threat.
Their body pigment, which is why they leave red stains when crushed.
Lawns, especially lush, well-fertilized grass right next to the house.
Spring, with a smaller wave in fall.
Vacuum them with a crevice tool instead of wiping.
No. They don't breed indoors and die off quickly inside.
A grass-free strip along the foundation, plus sealing gaps around sunny windows.
Related services
More from spiders, ants & crawling insects
From the Pest Library: Clover mites on the windowsill: what they are and how to stop them
Talk to us
Red mites all over the sills?
Call now to treat the walls and lawn edge. A real person answers any hour.
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