Pest control FAQs

What areas do you service?

We service southern seacoast of New Hampshire and Maine, within a 45 minute driving radius.

New Hampshire Towns: Portsmouth, Rye,, New Castle, Greenland, Stratham, Exeter, Durham, Newfields, Newmarket, Barrington, Durham, Lee, Madbury, Dover, Rollinsford, Somersworth, Rochester, Strafford, North Hampton, Hampton, Hampton Falls, Kensington, Seabrook

Maine Towns: Kittery, Kittery Point, York, Elliot, South Berwick, Berwick

Are you licensed?

Yes. Licensed in both New Hampshire and Maine by the states’ Department of Agriculture Division of Pesticide Control. GSC Pest management technicians are certified in structural and health related pest control, mosquito and biting fly, and termites and other wood destroying insects.

What insects and pests do you control?

GSC deals with a wide variety of invasive pests, some of the most common include mice, rats, carpenter ants, pavement ants, acrobat ants, termites, cockroaches, fleas, bed bugs, paper wasps, bald faced hornets, yellowjackets, mosquitoes, ticks, flies, spiders, springtails and many more.

If you have a concern about a possible pest, give GSC a call and we begin the process by properly identifying it and proposing the best treatment options. 

What does the process involve?

It starts with a thorough inspection of your property and a proper identification of pest activity. Through our Integrated Pest Management approach, we then consider strategies and make recommendations to both control and prevent future pest problems. Throughout it all, we’re careful to fully explain your options, so you can make the best decision based on your specific situation.

Will I need more than one treatment?

That depends on a lot of variables, including the pest involved, your environment, your structures, and the level of infestation. We have service agreement programs available to find long-lasting solutions that are proactive, effective, and cost-efficient.


As a general rule, the longer the problem has been going on, the longer it will take to resolve.

Are the products you use safe around children and pets?

At GSC Pest Management the safety of our customers and their families are our biggest priority. All chemicals used are EPA certified. Every pesticide goes under independent research to identify its potential risk to people and the environment. We take great care in understanding the label and best treatment practices to ensure the safest possible outcomes.

Are your services guaranteed?

Whereas the effectiveness of pest control treatments are subject to a lot of variables, our customer service is always guaranteed. If you’re not happy with the way you are treated, we offer a money-back guarantee.

How soon can I get an appointment?

When you call to set up an appointment, we will respond within 24 hours.

Do you offer contracts for commercial services?

Yes, our services are completely custom made to fit around the need of each customer and fit their specific pest control needs. Service contracts are renewed on an annual basis with a pest trend summary.

Do you offer free proposals/estimates?

Yes, following a thorough inspection and identification of active pests, our technicians will explain your best treatment options. If you choose to move forward with the treatment ,all technicians are equipped for same day treatment.

Can we request a specific day or time for service appointments based on our business?

Absolutely! Many of our customers have very stringent scheduling needs. We’re happy to accommodate them.