There are numerous factors that are considered by professionals when determining the cost for pest control services: Pest type: While some pests can be downright simple to treat and control, other pests (like an infestation of bedbugs) can require in-depth treatment. Area accessibility: Treating ant nests in a yard can be relatively straightforward for a pest technician. However, hard-to-reach areas that are difficult for pest control techs to navigate require more treatment and more of a technician's time. Infestation size: A significant cost factor for pest control services is the size of the problem. Treating a single wasp nest is fairly simple,but a termite infestation will demand more treatment from a pest control technician.