It will cost $50 to $70 for a pest control service to come into your property and spray for insects. This will take care of most insects that you will encounter in your home. That will guarantee your property is free from insects for 90 days or so.f you have an insect pest and you need to identify it look at this comprehensive list of insect pests. It will cost $75 to $100 to pay for pest control for rodents. The pest control service will typically come onto your property, set traps, and return to check the traps, hopefully with little varmints on them.