The answer to 'cost of quarterly service treatment in Illinois' is that the typical range for quarterly pest control service in Illinois can vary significantly, but generally falls between $100 to $300 per treatment. The exact cost will depend on factors like the size of your home, the type of pests being treated, the products and methods used, and the specific pest control company you choose.
It's important to get quotes from multiple local pest control providers to compare pricing and services. Many companies offer discounts for recurring quarterly or annual service agreements, which can help lower the overall cost. Be sure to ask about any additional fees, such as for initial inspections or special treatments.