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GSC Pest Management

  • Organic options
  • Extermination

GSC Pest Management is a pest control company serving the Portsmouth area, and it keeps its street address private. Its own website names termites, mice and rats, mosquitoes, bees, wasps and hornets and ticks and fleas. The owner has claimed its public business profile. It is one of two of the 14 companies we list around Portsmouth that name termites. It holds 5.0 stars across 14 public reviews.

  • Pests named5 kinds, listed below
  • WhereAddress kept private, Portsmouth NH
  • HoursWeekdays only
  • Google rating5.0 stars from 14 Google reviews
  • PestRated reviewsNone yet

What They Treat

The company’s own website names termites, mice and rats, mosquitoes, bees, wasps and hornets and ticks and fleas.

Its site speaks to both homes and businesses. Its site says it is family owned and it gives free estimates.

Organic or Extermination

On its website, GSC Pest Management names organic or green options along with regular pest treatment. In its words, Organic vs Conventional Pesticides. We read it on October 31, 2026.

Hours

Monday7:30 AM to 3:30 PM
Tuesday7:30 AM to 3:30 PM
Wednesday7:30 AM to 3:30 PM
Thursday7:30 AM to 3:30 PM
Friday7:30 AM to 3:30 PM
SaturdayClosed
SundayClosed

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See every company listed around Portsmouth

Reviews of GSC Pest Management

On Google it holds 5.0 stars from 14 reviews. Those are Google’s numbers, shown as they were when we checked.

No one has reviewed GSC Pest Management on PestRated yet. If you hired them, tell others how it went.

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Awards

Highly Rated 2026 See why.

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Service area

Serving Portsmouth and Nearby