If you’ve ever noticed tiny red dots crawling on your windowsill or patio in spring or fall, you’ve likely met the clover mite. Though nearly microscopic, these mites can appear in overwhelming numbers and may leave many homeowners puzzled—and a little alarmed. Here’s what you need to know about clover mites, how to identify them, and most importantly, how to keep them out of your home.
What Are Clover Mites?
Clover mites (Bryobia praetiosa) are tiny arachnids—relatives of spiders and ticks. They measure less than 1 millimeter in length and are recognizable by their reddish color and their unusually long front legs, which they often hold out in front of them.
These mites do not bite, sting, or cause damage to humans, pets, or furniture, but they can become a serious nuisance when they invade homes in large numbers.
Where Do They Come From?
Clover mites thrive in well-fertilized lawns, especially those with dense, lush grass and clover (hence the name). They’re also attracted to sunlit areas, including the exterior walls of homes, especially those facing south or southwest.
In spring and fall, when temperatures are mild, clover mites may migrate indoors through cracks in windows, doors, or foundations in search of warmth and shelter
What Do Clover Mites Eat?
Clover mites feed on plant juices. Their preferred meals include:
- Clover
- Grass
- Weeds
- Ornamental Flowers
- Shrubs
Despite their plant-based diet, they rarely cause noticeable damage to lawns or gardens unless their population is very high.
Are Clover Mites Harmful?
Not directly. They pose no threat to people or pets and don’t damage property. However, they can be a visual nuisance and may stain surfaces when crushed, leaving reddish marks on walls, curtains, and carpets.