---
title: "GSC Pest Management"
description: "GSC Pest Management is a pest control company that says it has been in business for 62 years, names Portsmouth and Rye as its service area, and offers free"
doc_version: "2026-10-21"
last_updated: "2026-10-21"
---

# GSC Pest Management

**Trade:** Pest Control · **Phone:** (603) 433-8581 · **Website:** http://www.gscpestmanagement.com/ · **Languages:** English

**Rating: 3.9/5** (medium confidence) — from 8 reviews across 5 sources.
100% of sentiment-scored reviews read net-positive. Last 6 months: 1 reviews, 0 negative.

## The honest read

GSC Pest Management is a pest control company that says it has been in business for 62 years, names Portsmouth and Rye as its service area, and offers free estimates.

A recent customer says a difficult hornet situation is resolved and calls the company responsive, courteous and effective. A 2025 customer said Tyler came and took care of a ground yellow jacket nest. A 2024 customer said they found fleas on the first night in a newly purchased home, GSC was quick to respond, and Torey treated the necessary areas.

A 2023 customer said they had used the company for tick and mosquito control, and it helped with a bee situation in one of their interior ceilings. A 2023 customer said the company came to inspect a small pest problem at the house, pinpointed it and suggested some solutions. A 2023 customer said the company came when it said it would and explained what it found in plain language. A 2022 customer said they used the company for a house and a rental and got help when they needed it last minute.

On Google, the company holds 5 stars from 14 ratings.

**Strengths:**
- A hornet problem — a recent customer says it is resolved
- A flea treatment — a 2024 customer said Torey treated the necessary areas
- Plain-language explanations — a 2023 customer said findings were explained clearly
- A last-minute visit — a 2022 customer said they got help in a bind

## Claims & citations

Every claim below is backed by real evidence rows — uncited claims are dropped in code before publication.

- Says it has been in business for 62 years _(confidence: medium)_
  - [Official Website](http://www.gscpestmanagement.com) — “Self-reported 62 years in business”
- Names Portsmouth and Rye as its service area _(confidence: medium)_
  - [Official Website](http://www.gscpestmanagement.com) — “Stated service area (self-reported): Portsmouth, Rye”
- A recent customer says a difficult hornet situation is resolved _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT25KVVFWTXhZak5QYlhCS2JGTllNVVpVV1dwelEyYxAB!2m1!1s0x0:0x9671d3d04ad7f293!3m1!1s2@1:CAIQACodChtycF9oOnJUQVMxYjNPbXBKbFNYMUZUWWpzQ2c%7C%7C?hl=en-US) — “5★ I highly recommend.  Responsive, courteous, and effective.  If you are wondering who to contact in the NH Seacoast area, it's GSC.  I loo…”
- A 2025 customer said a ground yellow jacket nest was taken care of _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2w5cFZGVkpWM3BwTTNSaFNHb3llV0pVY1U1VFFrRRAB!2m1!1s0x0:0x9671d3d04ad7f293!3m1!1s2@1:CAIQACodChtycF9oOl9pVFVJV3ppM3RhSGoyeWJUcU5TQkE%7C%7C?hl=en-US) — “5★ We had a ground yello jacket nest and Tyler came and took care of it. He was very knowledgeable and pleasant.  We will definitely be usin…”
- A 2024 customer said the company responded quickly to fleas in a new home and treated the necessary areas _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNua2MyYmt3RRAB!2m1!1s0x0:0x9671d3d04ad7f293!3m1!1s2@1:CIHM0ogKEICAgICnkc2bkwE%7C%7C?hl=en-US) — “5★ I highly recommend GSC! We purchased a new home and encountered fleas on the first night. I called GSC, and they were quick to respond. F…”
- A 2023 customer said the company explained what it found in plain language _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNKM3RLdTBRRRAB!2m1!1s0x0:0x9671d3d04ad7f293!3m1!1s2@1:CIHM0ogKEICAgICJ3tKu0QE%7C%7C?hl=en-US) — “5★ Very pleased with the services we've received from GSC. They come when they say they will, they address the issue, stand by their work, a…”
- Tick and mosquito control _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNsbDRtaTVRRRAB!2m1!1s0x0:0x9671d3d04ad7f293!3m1!1s2@1:CIHM0ogKEICAgICll4mi5QE%7C%7C?hl=en-US) — “5★ Very pleased with this family owned business, and happy to support them. The team is super professional, knowledgeable and efficient. We'…”
- 5 stars from 14 Google ratings _(confidence: high)_
  - [Google](https://www.google.com/maps/search/?api=1&query=GSC%20Pest%20Management&query_place_id=ChIJ-bIeCpPA4okRk_LXStDTcZY) — “Google: 5★ from 14 ratings”
- Specializes in Pest Control _(confidence: high)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT25KVVFWTXhZak5QYlhCS2JGTllNVVpVV1dwelEyYxAB!2m1!1s0x0:0x9671d3d04ad7f293!3m1!1s2@1:CAIQACodChtycF9oOnJUQVMxYjNPbXBKbFNYMUZUWWpzQ2c%7C%7C?hl=en-US) — “5★ I highly recommend.  Responsive, courteous, and effective.  If you are wondering who to contact in the NH Seacoast area, it's GSC.  I loo…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2w5cFZGVkpWM3BwTTNSaFNHb3llV0pVY1U1VFFrRRAB!2m1!1s0x0:0x9671d3d04ad7f293!3m1!1s2@1:CAIQACodChtycF9oOl9pVFVJV3ppM3RhSGoyeWJUcU5TQkE%7C%7C?hl=en-US) — “5★ We had a ground yello jacket nest and Tyler came and took care of it. He was very knowledgeable and pleasant.  We will definitely be usin…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNua2MyYmt3RRAB!2m1!1s0x0:0x9671d3d04ad7f293!3m1!1s2@1:CIHM0ogKEICAgICnkc2bkwE%7C%7C?hl=en-US) — “5★ I highly recommend GSC! We purchased a new home and encountered fleas on the first night. I called GSC, and they were quick to respond. F…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNsbDRtaTVRRRAB!2m1!1s0x0:0x9671d3d04ad7f293!3m1!1s2@1:CIHM0ogKEICAgICll4mi5QE%7C%7C?hl=en-US) — “5★ Very pleased with this family owned business, and happy to support them. The team is super professional, knowledgeable and efficient. We'…”
  - [Official Website](http://www.gscpestmanagement.com) — “About (self-reported, verbatim): Pest Control Services Services Pest Control Programs Residential Pest Control Commercial Pest Control Integ…”

## License

Status: **not_found** — verified against the official NH state registry, never self-reported.
Re-check at the official registry: https://forms.nh.gov/licenseverification/

## Sources

- [Google Reviews](https://www.google.com/maps/search/?api=1&query=GSC%20Pest%20Management&query_place_id=ChIJ-bIeCpPA4okRk_LXStDTcZY): Listed on this source
- [Official Website](http://www.gscpestmanagement.com): 62 yrs in business · Self-reported profile and service details
- [Local News](https://www.seacoastonline.com/story/news/local/portsmouth-herald/2009/05/13/letters-to-editor/51997628007/): Listed on this source
- [Reddit](https://www.reddit.com/r/rva_housing/comments/1e9npiz/do_not_rent_at_saint_johns_woods_apartments_gsc/): 0 community mentions discussing this business
- [Google](https://www.google.com/maps/search/?api=1&query=GSC%20Pest%20Management&query_place_id=ChIJ-bIeCpPA4okRk_LXStDTcZY): 5.0★ from 14 ratings

## Mentions

Unverified third-party mentions found on the open web — relay with attribution ("a Reddit commenter said…"), never as Tavlee's own finding.

- “Tom Aspinwall of Rye has lived in the area since the late 1980s when he sold his restaurant in Bow to work for what had been his father-in-law's pest control business. Now he owns the business and is …” — fosters.com — https://www.fosters.com/story/business/2010/07/12/gsc-pest-management-building-new/51541765007/

## Recent reviews

- **5/5 · Google Reviews · Zaphod · 2026-09-01**: I highly recommend.  Responsive, courteous, and effective.  If you are wondering who to contact in the NH Seacoast area, it's GSC.  I looked into others and they ran a gamut of issues.  My difficult hornet situation is resolved.  Glad I found GSC.
- **5/5 · Google Reviews · Emma Dale · 2025-08-06**: We had a ground yello jacket nest and Tyler came and took care of it. He was very knowledgeable and pleasant.  We will definitely be using them again. Great job
- **5/5 · Google Reviews · Tucker MacIsaac · 2024-09-27**: I highly recommend GSC! We purchased a new home and encountered fleas on the first night. I called GSC, and they were quick to respond. From the moment Torey got to the house, I felt like I was in good hands. He was realistic about the situation and treated the necessary areas.
- **5/5 · Google Reviews · Kara Anderson · 2023-11-28**: Very pleased with this family owned business, and happy to support them. The team is super professional, knowledgeable and efficient. We've used them for tick and mosquito control and they helped us out in a pinch with bee situation in one of our interior ceilings. Great company!
- **5/5 · Google Reviews · Jason Landry · 2023-11-01**: Called GSC Pest Management to come inspect a small pest problem we were experiencing at our house. After checking it out, they were able to pinpoint the problem and suggested some solutions. The service technician was very pleasant and I would definitely call them again if needed.

It's great to be …
- **5/5 · Google Reviews · D B · 2023-06-28**: Very pleased with the services we've received from GSC. They come when they say they will, they address the issue, stand by their work, and explain everything they find and the work they do in plain language that's easy to understand. Highly recommend them to anyone in need of their services.
- **5/5 · Google Reviews · Ian Kelley · 2022-08-31**: I would highly recommend this small family owned pest control business to anyone in the seacoast area of New Hampshire and southern Maine. Forget the large corporations who will glaze over the small fine print and attention to detail. These guys are honest, professional and do a great job at an affo…
- **5/5 · Google Reviews · N Snow · 2022-05-06**: This small business is a gem of an outfit. I use them for my house and rental. I was in a bind where I needed their help last minute and they were kind, responsive and helped me get the service I needed. Exceptionally professional.

---

Data freshness: last scanned 2026-10-18T04:27:58.540Z.
Cite as: GSC Pest Management — Tavlee (https://tavlee.com/contractor/gsc-pest-management)
Source: https://tavlee.com/contractor/gsc-pest-management

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