In one of the rich ironies of life, clover mites are especially numerous in lawns with a heavy growth of succulent, well-fertilized grass. Clover mite migrations usually happen in the early spring when warm temperatures first occur. Late autumn migrations also are possible. Annoyance Clover mites are an annoyance because of their presence and their tremendous numbers. Fortunately, they are harmless.
Clover mites are only a temporary nuisance.
They cannot reproduce indoors and each and every mite you see indoors has wandered in from outside. The worst thing about clover mites is the reddish stain they leave if they are crushed. The stains are quite noticeable on white woodwork or walls and are difficult to wash away. Use a vacuum cleaner with proper attachments to effectively collect live mites without crushing them. Household insecticide sprays can be used to control wandering mites but the benefit is very short-lived.