There are several different species of spiders in Missouri but only 2 that are poisonous – Brown Recluse and Black Widows. Thorough spider control treatment includes treatment on the exterior, interior, attic, and crawl space (if present). Excessive interior clutter, storage, and undisturbed areas can contribute to the magnitude of the spider population. Exterior conditions such as dense vegetation, wood piles, stored items, yard clutter, etc. can also contribute and allow conducive conditions suitable for spiders. Before we make a recommendation to eliminate a spider problem we will try to determine if Brown Recluse or Black Widow Spiders are present. Once this evaluation is made we will recommend a treatment strategy to best solve the problem. View our pest library to help determine the type of spiders that are bugging you!