Last updated: 2026-10-11
Illinois Pest Control is an independent referral service that connects Illinois homeowners, landlords, and business owners with participating providers for general pest control. A general service is the starting point for most household pests: ants, spiders, cockroaches, centipedes, silverfish, stinging insects, and often mice. Specialized problems like termites and bed bugs are usually separate services with their own inspections and pricing.
Pest control vs. exterminator: is there a difference?
In practice, no. "Exterminator" is the older, more common word people search for; "pest control" or "pest management" is what the industry and the state use. In Illinois, any business doing commercial structural pest control must be licensed by the Illinois Department of Public Health (IDPH), whatever it calls itself.
The bigger difference is in approach. The EPA recommends integrated pest management (IPM): inspect first, remove what attracts pests, seal entry points, and use pesticides only where and when they're needed. When you're comparing providers, ask how they approach your problem, not just what they spray.
What a general pest control service usually covers
Coverage varies by provider, so read the service agreement. Typical general services include:
- Crawling insects: ants (not always carpenter ants), cockroaches, spiders, centipedes, silverfish, earwigs, crickets.
- Occasional invaders: insects that move indoors when the weather turns, like boxelder bugs and stink bugs.
- Rodents: sometimes included, often an add-on. See rodent control.
- Usually separate: termites (termite control), bed bugs (bed bug treatment), mosquitoes, and wildlife.
Why pests get inside
Most indoor pest problems come down to three things: a way in, something to eat or drink, and a place to hide. Gaps around pipes, utility lines, doors, and foundation cracks let insects and mice in. Crumbs, pet food, garbage, and standing water feed them. Clutter, cardboard, and damp basements shelter them.
Illinois weather adds a seasonal pattern. Cold snaps push mice and overwintering insects toward warm buildings in fall, and spring warmth brings ants and termite swarmers out. That's why many providers sell plans built around seasons.
One-time treatment vs. a recurring plan
A one-time service makes sense for a single, identified problem. Recurring plans (monthly, every other month, or quarterly) are meant to keep a perimeter treated and catch problems early. Neither is right for everyone; ask what each visit includes and whether follow-up visits between scheduled services cost extra.
HomeAdvisor's June 2026 cost data shows how the two compare: one-time services commonly run $300 to $550, while quarterly visits run $100 to $300 each and monthly visits $40 to $70 each.
Safety around pest control
Licensed providers must follow product labels, which spell out where a product can be used and what precautions apply. Ask what will be applied, where, and whether children or pets should stay out of treated areas and for how long. If you use any pesticide yourself, follow the label exactly, and leave restricted-use products to licensed professionals.
When professional pest control may help
- The same pest keeps coming back after you've cleaned up and sealed obvious gaps.
- You see pests in several rooms or on more than one floor.
- You find droppings, nests, or chewed material.
- You can't identify the pest, or you suspect termites or bed bugs.
- You manage a rental or business and need documented service.
What general pest control costs
HomeAdvisor's June 2026 data puts the average pest control service at $172, with most between $108 and $261 and an overall range of $50 to $500. By pest, it lists ants at $100 to $500, cockroaches at $100 to $600, spiders at $100 to $500, and mice or rats at $180 to $600. These are national figures; Illinois prices depend on the provider and the size of the problem.
- The pest: some need one visit, others need follow-ups.
- Size of the home and property: more square footage and perimeter mean more time.
- Severity: an established infestation costs more than early activity.
- One-time vs. plan: plans cost less per visit but add up over a year.
- Exclusion work: sealing entry points is often priced separately.
What you can do right now
- Note what you're seeing, where, and when; take a photo if you can do it safely.
- Store food in sealed containers and take out the trash.
- Fix drips and leaks; pests need water.
- Look for gaps around pipes, doors, and vents.
- Call and describe the problem; ask what the provider would inspect first.
Questions to ask a pest control company
- Is your business licensed by the Illinois Department of Public Health, and what is the license number? Who is the certified technician?
- Do you use integrated pest management, and what would you do besides spraying?
- What products would you use, where, and what precautions should my family and pets take?
- What does the plan include, how often are visits, and are re-treatments between visits free?
- Is there a contract term or cancellation fee?