Serving Rockingham, Hillsborough, Strafford and Belmont counties in New Hampshire.

The last thing your New Hampshire business wants to deal with is an invasion of rodents, insects, or worse. Call 603 Pest for commercial pest control help so that you can get back to work.

Industries we serve

603 Pest is equipped to control pests at a variety of New Hampshire business types.

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Quick Serve Restaurants

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Hospitals and Healthcare

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Nursing Homes

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Assisted Living Facilities

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Office Buildings

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Manufacturing Facilities


“As a landlord with over 70 units, pest problems are inevitable. 603 Pest catches small problems before they turn into infestations and are very knowledgeable about the best course of action to take for the specific problem. They are friendly with all of our tenants, prompt to schedule and take care of a problem, and diligent in eradicating the problem. I would recommend 603 Pest to any landlord who wants to keep pests out of their buildings.”

Granite Property Management
Client for 5+ years

Our guarantee to your business

On time and professional. Professional appearance, a positive attitude and expert knowledge is what we’re about. We use premier products and procedures. We will be on time. We will do the job right the first time. We will perform all services at your convenience to avoid any interruption to your normal operations.

Every project is different. We will develop a comprehensive, safe and effective Integrated Pest Management (IPM) plan for your particular facility. Because every company is different.

We stand beside you. We will be your partner to create a pest free environment for your customers, staff, and employees. We will protect your reputation and brand to the best of our pest eliminating abilities. We get it, because we’re a business too.


“The 603 Pest Control staff works very hard to create positive resident relations. Monthly treatment reports are generated per unit and go into great detail as to what the condition of the unit was. 603 Pest is certainly dedicated to achieving the best possible job performance.”

– Janet L. Aldrich
LA Classic Property Management LLC, Manchester, NH
Client for 6+ years

Most common commercial pests

Literally anything can crawl into your place of business unannounced. But these pests are seen most by commercial pest control companies in Southern New Hampshire.

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Bed Bugs

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For all southern NH commercial pest control: