When infected trees are near a patio or parking area their honey dew will drip onto patio furniture and cars and can be difficult to remove.
Mites are dry heat lovers. They will normally be found in areas that offer this along with a host tree, shrub, or turf. South facing exposures are at greater risk than other areas in your landscape. Mites are most often detected only after damage is observed. If you suspect mites are damaging your plant life treatment is recommended due to the damage they can cause in a single growing season.