- (301) 829-0060
- Mt. Airy, MD
- info@pestshieldinc.com
Pest Shield, Inc. has served Frederick County homeowners since 2011, operating under Maryland Department of Agriculture license MDA #30263 with a team that brings over 75 years of combined pest management experience — including owner Troy Yowell’s roughly 35 years in the field and on-staff entomologist Jeffrey Allwine’s laboratory-level diagnostic capability. The company has earned Best of Frederick MD Pest Control (2021), Best of Nextdoor four consecutive years (2021–2024), and the HomeAdvisor Super Service Award six consecutive years (2013–2018), with 338+ five-star reviews across Google and HomeAdvisor. Pest Shield is headquartered in Mt. Airy — a few miles from New Market — and serves the full eastern Frederick County corridor with same-day availability and a free inspection for every new client relationship.
How it works
Four steps. No surprises. Same answer whether it's your first call or your tenth.
You reach Troy or someone on his team directly. No call center, no dispatcher, no routing.
Same-day or next-day for most calls. Emergency stinging-insect situations and real-estate WDI deadlines get priority.
We identify the species, locate entry points, and find the source — not just the symptom.
Written recommendation, straightforward pricing, no obligation. If you don't need treatment, we'll tell you.
New Market’s combination of older housing stock, agricultural surroundings, and wooded residential lots creates pest pressure from multiple directions at once — and it doesn’t let up seasonally. Most homeowners here deal with at least one significant pest issue per year; many deal with several. Understanding when and why they appear is the first step toward keeping them out.
| Season | Primary Threats | What You’re Likely to See |
|---|---|---|
| Spring | Termite swarmers, pavement ants, odorous house ants, carpenter ants | Winged insects emerging from soil or wood (termite swarmers); ant trails appearing along foundations, in basements, or through gaps in siding; carpenter ants near moisture-damaged wood |
| Summer | Mosquitoes, yellow jackets, bald-faced hornets, wasps, spiders, ticks | Stinging insects nesting in wall voids, under siding, in exhaust vents, or underground; mosquito pressure in wooded or low-lying areas; tick activity in lawn edges and wooded borders |
| Fall | Mice, Norway rats, brown marmorated stink bugs, cave crickets, centipedes | Droppings behind appliances or in cabinets; scratching sounds in walls or attic; stink bugs clustering on south-facing walls; crickets and centipedes moving indoors as temperatures drop |
| Winter | Mice, rats, overwintering insects | Rodent activity concentrated in attics, basements, and wall voids; continued stink bug presence indoors; silverfish and cockroaches in warm, humid areas |
New Market’s agricultural surroundings add a layer of pressure that purely suburban areas don’t face. When fields are harvested or turned in fall, mice and Norway rats that have been living in field margins move toward nearby structures — and older homes with aging foundations, crawl spaces, and gaps around utility penetrations give them easy entry. Frederick County’s clay-heavy soils are well-documented habitat for subterranean termites (Reticulitermes flavipes), the most destructive termite species in the Mid-Atlantic, and homes in and around New Market’s historic district often have the crawl spaces and wood-to-soil contact that make them particularly vulnerable. A single pest treatment addresses what’s visible; the underlying conditions that produce recurring pressure don’t change between visits.
60+ years of combined experience. Tell us what you’re seeing — we’ll come look, no obligation.
Pavement ants raided our basement this morning and I was desperate for someone to come today! After calling around and being told they recommended a quarterly service before even seeing our problem and couldn’t come out until Thursday(!!!) I called pest shield and they came this morning. He explained the problem and found the source. He sprayed the area and around the house and doesn’t think we need a service plan. He is also knowledgeable about mosquitoes. Call them!!
Elise Richard · June 2024 Read on Google →
Pest Shield has been absolutely wonderful! We had an issue with mice, and Pest Shield was the ONLY company we could get to come out to our house on the same day which happened to be a Sunday. The technician, Troy, was extremely knowledgeable, friendly, and honest. He saved my husband and I a lot of money. Most companies would have taken advantage of the situation. It’s been 30 days and we have not had any more issues. We were so satisfied with the company and the services we received, that we also signed up for the pest (bugs) control service last month. Since then, we have not seen any bugs (including those nasty centipedes and camel crickets)!!! Thank you so much, Pest Shield!!!!!
Myah Moxley · February 2015 Read on HomeAdvisor →
Pest Shield is a great company to work with. Troy is very knowledgeable and won’t do services you don’t need. He does a thorough job the first time so you don’t have to keep calling him back.
Jim Frizen · April 2020 Read on Google →
General pest & rodent control
Every Pest Shield relationship starts with a free property inspection — no treatment is recommended until Troy or one of the technicians has assessed what’s actually present and where it’s coming from. That inspection covers the exterior perimeter, foundation, entry points, crawl spaces when accessible, and any interior areas of concern. If the problem warrants a one-time treatment, that’s what gets recommended. If it doesn’t warrant treatment at all, that’s what you’ll hear — Troy has told plenty of New Market homeowners they don’t need service, and that’s not going to change. When ongoing protection makes sense, Pest Shield offers the Standard Care Plan.
Pest Shield’s Standard Care Plan covers the full range of general pests — ants (Tetramorium caespitum, Tapinoma sessile, Camponotus spp.), spiders, cockroaches, mice, rats, stink bugs, crickets, silverfish, water bugs, centipedes, mosquitoes, ticks, and more. The plan runs on a 60-day bi-monthly cadence, which is more frequent than the industry-standard quarterly schedule and calibrated to Maryland’s seasonal pest cycles. Treatment is exterior-focused — Pest Shield treats the perimeter of your home to stop pests before they get inside, which means little to no interior treatment is required and chemicals stay out of your living space. You don’t need to be home for scheduled visits.
| Feature | Standard Care Plan |
|---|---|
| Treatment cadence | Every 60 days (bi-monthly) |
| Coverage | General pests and rodents — ants, spiders, cockroaches, mice, rats, stink bugs, crickets, silverfish, water bugs, centipedes, mosquitoes, ticks, and more |
| Treatment focus | Complete exterior perimeter; little to no interior treatment required |
| Guarantee | 100% effective — free retreatment between scheduled visits if pest activity reappears |
| Scheduling flexibility | No need to be home for treatment |
The logic behind recurring service is straightforward: the conditions that produce pest pressure in New Market — agricultural field margins, wooded lots, older foundations — don’t change between visits. A single treatment knocks down what’s active; the 60-day cadence interrupts pest life cycles before new populations establish. Customers who switch from one-time treatments to the Standard Care Plan consistently report that the recurring problems they’d been managing for years simply stop recurring.
Beyond the Standard Care Plan, Pest Shield handles the full range of pest situations New Market homeowners encounter: termite treatment under the Termite Warranty Plan (one-time Termidor® HE application, 90-day colony eradication, 15+ year residual, lifetime renewable warranty), bed bug elimination, stinging insect removal, and rodent control with entry point sealing. Jeffrey Allwine, Pest Shield’s on-staff entomologist, provides species-level identification when field diagnosis isn’t conclusive — a diagnostic capability most small pest control companies have to outsource. Treatment products are EPA-approved, and Pest Shield’s exterior-first approach keeps chemicals out of your home as a matter of standard practice. Nontoxic bio-pesticide options are available for families with children and pets when the situation allows.
Owner
Founded Pest Shield in 2011 after years as a pest management contractor on U.S. military bases in Iraq and Afghanistan. Around 35 years in pest management. Personally handles or leads the majority of service calls.
Pest Management Specialist
Field technician handling residential and commercial service calls across Frederick, Carroll, and Montgomery counties.
Pest Management Specialist
Field technician handling residential and commercial service calls across the service area.
Our Entomologist
Consulting entomologist on species identification, conducive conditions, and treatment strategy for difficult cases.
New Market sits in eastern Frederick County near the Carroll County line, with I-70 running just to the south and US-40 connecting it to Mt. Airy, Monrovia, and Frederick to the west. The town is surrounded by a mix of working farmland and wooded residential lots, with a historic district of older homes that predates modern construction standards by a century or more. Pest Shield is headquartered in Mt. Airy — roughly five miles from New Market — and serves the full eastern Frederick County corridor including New Market, Monrovia, Ijamsville, Lake Linganore, and surrounding communities.
The conditions around New Market create a specific pest profile. Agricultural field margins along Routes 75 and 144 are a documented driver of fall rodent migration — when crops come in, mice and Norway rats move toward nearby structures. The clay-heavy soils characteristic of eastern Frederick County retain moisture and support subterranean termite colonies year-round, and older homes in the New Market historic district often have the crawl spaces, wood-to-soil contact, and foundation gaps that make them more vulnerable than newer construction. Wooded lot lines fuel stinging insect pressure through late summer and into October, when yellow jacket and hornet colonies reach peak size and aggression.
Pest Shield treats the full range of pests common to New Market and eastern Frederick County: ants (pavement ants, odorous house ants, carpenter ants), mice, rats, yellow jackets, hornets, wasps, bees, termites, bed bugs, spiders, stink bugs, mosquitoes, ticks, cockroaches, crickets, silverfish, centipedes, water bugs, fleas, and more. If it’s on the pest list for Central Maryland, Pest Shield handles it — the free initial inspection determines what’s present and what treatment, if any, makes sense for your specific situation.
The Standard Care Plan provides treatment every 60 days — a bi-monthly cadence that’s more frequent than the industry-standard quarterly schedule and calibrated to Maryland’s seasonal pest cycles. Treatment is exterior-focused, targeting the perimeter of your home to stop pests before they get inside, so little to no interior treatment is required and you don’t need to be home for scheduled visits. The plan carries a 100% effective guarantee: if pest activity reappears between scheduled visits, Pest Shield returns at no charge. For New Market homes — where agricultural surroundings, wooded lots, and older construction create year-round pressure from multiple pest types — recurring service tends to outperform one-time treatment because the underlying conditions don’t change between visits. That said, if a one-time treatment is genuinely all your situation warrants, that’s what Troy will recommend.
Yes — Pest Shield uses EPA-approved products and an exterior-first treatment approach that keeps chemicals out of your living space as standard practice, not as an add-on. Nontoxic bio-pesticide options are available when the pest and situation allow, and Troy has documented experience treating homes with immunocompromised children, crawling babies, and dogs without disrupting the household. If there are specific safety concerns about your family or pets, raise them when you call — Troy will walk through exactly what products are being used and where.
It depends on the pest and the conditions driving the problem. For a one-time stinging insect nest or an isolated ant invasion with no structural vulnerabilities, a single treatment is often sufficient — and Pest Shield will tell you that directly rather than push a plan you don’t need. For pests like mice, ants, cockroaches, and stink bugs in homes with the kind of entry points and environmental pressure common in New Market, recurring service tends to produce more durable results because the conditions that attract pests persist between visits. The free inspection is the honest starting point: Troy assesses what’s present, explains what’s driving it, and recommends only what the situation actually warrants.
Same-day service is standard for active infestations and emergency situations — Pest Shield is headquartered in Mt. Airy, roughly five miles from New Market, and Troy and the team have documented same-day response across dozens of reviews, including Sunday service at no extra charge. For non-emergency work, next-day scheduling is typical. When you call (301) 829-0060, you’re talking directly to the people who will do the work — no dispatch center, no call routing — which means scheduling happens in the same conversation.
