Both species may exhibit banding on the tail in juvenile stages. Frequently groups of adult geckos will establish themselves in the eaves and soffits of homes, where they mate and reproduce. Young, one to three inch-long, geckos appear in midsummer. These immature geckos are more often seen indoors as they seek new harborage. Geckos feed on insects and frequently found near lighted windows and outdoor lights, where small insects are abundant during the warm season.
Geckos are nocturnal, being most active during the evening and nighttime hours.
They remain active throughout the spring, summer and fall when they can become extremely abundant outdoors on screens and brick walls. They enter the home through gaps around doorways or windows near these outdoor aggregation sites. Geckos are not harmful, but their presence in the home is considered undesirable by many people. Gecko droppings can stain and contaminate carpets, floors, walls and curtains. No pesticides are registered for gecko control.