Sanitation should be the first step in control. Clean away all webbing along with spiders and eggs with a vacuum cleaner. Keep undisturbed areas of a structure as free of clutter as possible. Periodically moving stored materials and vacuuming these areas is suggested. Many spiders may be excluded from the home by caulking cracks and crevices on the outside of the house.
Chemical control is much more effective when associated with good sanitation.
Household sprays may be applied inside the structure in areas such as the basement, attic, storage area, behind furniture and in other nooks and crannies. Outside areas to be treated include around doors and windows, under the eaves of the roof, under porches, and crawl spaces if they are present and accessible. Aerosols, mists or fogs containing allethrin, permethrin, pyrethrins, sumithrin, resmethrin, or tetramethrin also are available for indoor control where longer-lasting residual sprays may not be desirable. Professional pest control operators have knowledge and access to some of the better spider-control pesticides that are not sold to nonlicensed pesticide applicators. Thus, their services may be desirable.