Remove some infestation sources such as clutter in the yard and crawl spaces and any ground covers against the foundational walls. Any sanitation step to remove favorable conditions is the first step in spider control. Getting rid of other insects with a routine insecticide treatment should be considered, since other insects are their food sources.
If spiders are coming indoors, hunting for their prey, spray a residual insecticide treatment such as Cyzmic CS around all entry points and the perimeter of your house. Spray anywhere they are webbing, on decks, under eaves, on porches and other areas on the exterior of buildings.