Clover MiteClover mites are not insects, they are arachnids - like spiders. They can range in size from 1/60th to 1/30th of an inch long. In the early spring or late fall, they will sometimes invade homes by the hundred-thousands. The adults are reddish-brown to an orangish color, while the young and eggs are redder. They are outdoor pests frequently found on the southern sides of houses. As colder weather arrives, they will move indoors but rapidly die without vegetation for food.