Understanding Why Spiders Choose Your Home and How We Stop Them
Spiders are predatory by nature and will only establish themselves in locations where prey is consistently available. A spider that builds a web in the corner of your garage or basement is there because moths, flies, gnats, or other insects are regularly present in sufficient numbers to sustain it. A wolf spider that wanders your living room floor is hunting a food source it has detected nearby. Understanding this means that a treatment program targeting only spiders without addressing their prey population will provide only temporary relief; spiders will return as long as the food supply exists.
Our spider control program addresses this by combining direct spider treatment with comprehensive general insect control. We apply residual insecticides to the surfaces where spiders travel and rest, physically remove all accessible webs and egg sacs, and apply a thorough exterior barrier treatment that both kills existing spiders and reduces the insect populations that sustain them. The result is a property that is inhospitable to spiders from the inside out.
We also take the presence of potentially dangerous spider species seriously. In Ahtanum, WA and the surrounding region, black widow and brown recluse spiders may be present depending on geography, and encounters with these species carry genuine medical risk, particularly for children, the elderly, and anyone with compromised immune function. Our technicians are trained to identify all potentially hazardous species and apply treatment protocols appropriate to their specific biology and behavior.
Spider Species We Treat and Their Risk Levels
Black Widow (Latrodectus spp.)
The black widow is the most venomous spider in North America. Females are shiny black with the distinctive red hourglass marking on the underside of the abdomen. They build irregular, tangled webs in dark, undisturbed areas including wood piles, storage boxes, under outdoor furniture, in utility meters, and in crawl spaces. Bites cause severe systemic symptoms including intense pain, muscle cramps, sweating, and nausea. Medical attention should be sought for any suspected black widow bite.
Brown Recluse (Loxosceles reclusa)
Brown recluse spiders are tan to dark brown, with a characteristic violin-shaped marking on the cephalothorax. They shelter in undisturbed areas such as storage boxes, folded clothing, behind baseboards, and in attics. Unlike most spiders they actively avoid contact but will bite when pressed against skin. Their venom causes necrotic tissue damage that can result in a slow-healing wound requiring medical treatment. Infestations can involve hundreds of individuals in heavily affected structures.
Wolf Spider (Lycosidae family)
Wolf spiders are large, hairy, and fast-moving, which makes encounters with them startling and alarming. They do not build webs and instead actively hunt prey on the ground. They are not medically significant but are frequently the species that causes the most concern among residents due to their size, sudden movement, and tendency to appear unexpectedly indoors. They often enter homes through gaps at the base of doors or around utility penetrations when foraging for insects.
Common House and Cellar Spiders
The majority of indoor spiders, including common house spiders, cellar spiders, sac spiders, and jumping spiders, are medically harmless and actually benefit homeowners by consuming mosquitoes, flies, and other pest insects. However, their webs, egg sacs, and visible presence are undesirable in most homes and businesses. Our program removes all accessible webs and egg sacs and applies preventive treatment to stop continued colonization.
Our Four-Component Spider Control Program
Comprehensive Property Inspection
We conduct a thorough inspection of the full interior and exterior of your property to identify all spider species present, map web and egg sac locations, determine which species pose the greatest concern, identify harborage areas and entry points, and assess the insect prey population levels that are sustaining spider activity. This information drives our treatment selection and placement.
Web and Egg Sac Physical Removal
All accessible webs and egg sacs are physically removed using a web brush during each service visit. This is important not just aesthetically but because webs contain pheromones that attract other spiders, and egg sacs may contain dozens to hundreds of spiderlings that will hatch and spread if left in place. Removal is performed on the full exterior of the structure including eaves, soffits, window frames, light fixtures, and foundation areas, and in all accessible interior spaces.
Residual Insecticide Application
Professional-grade residual insecticides are applied to all surfaces where spiders travel, including baseboards, doorframes, window frames, basement walls, crawl space beams, garage walls, and the exterior perimeter of the structure. Spiders pick up lethal doses by walking across treated surfaces, and the residual activity continues killing new spiders that enter the treated zone for four to six weeks after application.
Prey Insect Reduction Treatment
Because spiders follow their food source, we apply the same exterior barrier treatment that reduces general insect populations around and within your home. By reducing flies, moths, gnats, ants, and other insects that spiders feed on, we make your property less attractive and less sustainable as a spider habitat long-term. This is the component of our program that separates a temporary knockdown from a lasting solution.