How to choose a licensed pest control service

Start with the pest, the treatment plan and the technician's credentials.

The answer in 2 lines. Choose a pest control service that identifies the pest, explains its proposed methods and provides a written price and follow-up plan. Verify the business and applicator credentials required by your state. Ask how exclusion, sanitation, monitoring and targeted treatment will work together. Before pesticides are applied, get the product information and household precautions. Pressure to sign immediately, secret formulas and claims of government endorsement are warning signs.

Before booking treatment

Describe what you have seen and request identification of the pest and evidence of its activity before agreeing to treatment.
Ask for the business license information and the credentials of the person who will treat your home, including any supervision arrangement.
Compare written proposals that explain the treatment area, methods, total price, follow-up visits and cancellation terms.

Stop: danger

Possible pesticide exposure: follow the Illinois public-health guidance and call Poison Control at 1-800-222-1222. If someone has trouble breathing, collapses or has a seizure, call 911. Have the product name and treatment report ready, and follow the instructions you receive.
Unsafe access: do not enter a treated area before the applicable label conditions and professional instructions allow it. Get clarification if instructions conflict or are missing.

Check the credentials that apply in your state

There is no single consumer credential that answers every US licensing question. A business license, an applicator's certification and a technician's authorization may be separate. Requirements can also differ by treatment category.

Use the EPA state and territorial pesticide-agency page to find your regulator. Ask whether the business and proposed technician are authorized for the service, whether supervision is required and how to check disciplinary information.

For a state example, the Maryland hiring guidance explains its business-licensing and certified-applicator requirements. Use that page for Maryland work; confirm the equivalent rules with your own state's agency elsewhere.

What not to do

Accepting a claim that a business is endorsed by a government pesticide agency.
Agreeing to treatment based only on insects someone says were found at a neighboring property.
Signing a vague recurring-service agreement without understanding renewal and cancellation terms.
Accepting an expanded treatment or extra charges without a revised written agreement.

Ask for a plan tailored to your home

A useful proposal connects the pest's activity to specific actions. Ask where the evidence was found, what result is expected, how progress will be checked and what happens if activity continues. Have the provider distinguish elimination from ongoing suppression or monitoring.

Ask which nonchemical measures are needed: closing entry points, repairing leaks, improving food storage or removing hiding places. Clarify who performs each task and whether the quoted price includes it. A treatment may fail if the underlying conditions remain.

The EPA service-selection guidance provides questions about qualifications, references and pesticide information. Use it when comparing proposals, and request product labels and precautions before treatment.

Understand preparation, follow-up and payment

Tell the provider about children, pets, aquariums and household circumstances relevant to treatment precautions. Ask what must be removed or protected, who must leave, when reentry is allowed and what cleaning is appropriate afterward. These instructions depend on the product and application; there is no universal waiting period.

Get the complete price, including inspection, travel, follow-up and any recurring charges. Ask what a guarantee covers, what conditions you must meet and whether a return visit costs extra. Do not confuse a promise to return with a promise to eliminate the pest.

In a rental, notify the landlord or property manager in writing before ordering work affecting the building. Payment responsibility depends on state or local rules, the lease and circumstances. For shared areas, request coordinated action through building management.

Good to know

Use the Illinois service-selection questions to discuss expected results, technician experience, guarantees and cancellation before signing.
Keep treatment reports, product information, photographs and invoices. They help a replacement provider or regulator understand what happened.
For suspected pesticide misuse, use the EPA agency directory, select your state contact and ask how to submit the evidence.

Marcus sees cockroaches in a rental kitchen. He notifies the property manager and compares treatment proposals. One offers routine spraying without explaining the source. Another identifies activity near plumbing, outlines monitoring and targeted treatment, and provides preparation instructions. Marcus asks management to verify the credentials and coordinate the repair and treatment.

A made-up story, for illustration.

Bobby

Sources, verification, confidence

Verified on November 6, 2026, for the United States. Confidence: high for service-selection questions, pesticide precautions and state verification; medium for individual licensing and rental-payment situations, which require local review. No nationwide treatment price or reentry period is asserted.