The answer to 'how much does extermination cost in Illinois' is that the cost of extermination services can vary widely depending on several factors. In general, most homeowners in Illinois can expect to pay between $100 to $500 for a basic extermination service, with the average cost being around $250.
The exact cost will depend on the size of your home, the type of pests being treated, the severity of the infestation, and the specific services required. Additional factors that can affect the price include the location of your home, the reputation and experience of the pest control company, and whether you need ongoing treatment or a one-time service.