- (301) 829-0060
- Mt. Airy, MD
- info@pestshieldinc.com
Pest Shield, Inc. has been protecting Frederick County homes from stink bugs and seasonal pest pressure since 2011, operating under Maryland Department of Agriculture license #30263 with over 75 years of combined pest management experience across the team. Owner Troy Yowell handles the majority of service calls personally — when you call, you’re talking to the person who will show up at your door. Pest Shield holds 338+ five-star reviews across Google and HomeAdvisor, including from homeowners throughout Frederick County who’ve dealt with exactly the kind of fall stink bug migration that hits Woodsboro properties hard.
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.
What you’re seeing isn’t random. The brown marmorated stink bug (Halyomorpha halys) follows a predictable seasonal script: as days shorten and temperatures drop in late summer and early fall, colonies that spent the summer feeding in agricultural fields and wooded edges begin searching for a warm place to overwinter. In Woodsboro — a small rural community in eastern Frederick County, hemmed in by farmland and forest — residential structures sit directly in the path of that migration. Your home’s sun-warmed siding is exactly what they’re looking for.
The frustrating reality of stink bugs is that getting them inside is easy and getting them out is harder. A single fall season without exterior treatment can mean finding live stink bugs indoors all winter — emerging from wall voids on warm days, appearing on window sills, and triggering that smell every time one gets disturbed. One-time treatment can knock down an active aggregation, but without ongoing pest protection in Woodsboro, the same conditions that drew them this year will draw them again next fall.
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
The right time to treat for stink bugs is before they breach the structure — and the right place to treat is the exterior perimeter. Pest Shield’s approach starts with a free inspection to assess where stink bugs are staging, which surfaces they’re targeting, and where likely entry points exist. From there, treatment focuses on the home’s exterior: foundation perimeter, siding, soffits, window and door frames, and any gap or penetration that represents a potential entry point. This exterior-first methodology keeps product outside the home and intercepts stink bugs at the point of entry rather than chasing them through wall voids after they’ve already gotten in.
Because stink bug pressure is cyclical — driven by the same agricultural and seasonal patterns every year — a single treatment addresses the current aggregation but doesn’t prevent next fall’s migration from targeting your home again. Pest Shield’s Standard Care Plan is built for exactly this kind of recurring seasonal pest: treatments every 60 days (bi-monthly, more frequent than the industry-standard quarterly cadence), with a complete exterior treatment focus that maintains the perimeter barrier through the seasons. The plan includes a 100% effective guarantee and free retreatment between scheduled visits if stink bug activity reappears — no additional charge, no waiting for the next scheduled visit.
| Service Option | What It Covers | Best For |
|---|---|---|
| Initial inspection + treatment | Free inspection, exterior perimeter treatment targeting current aggregation and entry points | Active fall infestation; first-time customers |
| Standard Care Plan | 60-day bi-monthly exterior treatments, 100% effective guarantee, free retreatment between visits | Ongoing seasonal protection; year-round perimeter maintenance |
You don’t need to be home for exterior treatments under the Standard Care Plan — Pest Shield handles the perimeter without requiring access to the interior, which means service stays on schedule regardless of your availability. When the work is done, Troy will walk you through what was treated and what to expect: stink bug activity on the exterior typically drops within days of treatment, and any that do breach the perimeter during the guarantee period are covered by a free return visit. Treatment uses EPA-approved products; nontoxic bio-pesticide options are available for households with children and pets, and the exterior-first approach means the products stay outside where they belong.
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.
Woodsboro sits in eastern Frederick County along MD Route 194, a small community surrounded by the working farmland and wooded edges that characterize this part of the county. Pest Shield serves Woodsboro as part of its Frederick County coverage area, alongside nearby communities including New Market, Walkersville, and Woodbine to the south in Carroll County. The area is accessible via US-15 and MD-26, and the mix of older residential construction and rural lot character is typical of the properties Pest Shield works on throughout the region.
The agricultural landscape surrounding Woodsboro is directly relevant to stink bug pressure. Brown marmorated stink bugs feed heavily on crops — soybeans, corn, and fruit trees are all documented hosts — and the fields that border residential properties in this part of Frederick County provide ideal summer habitat. When harvest concludes and field cover disappears in September and October, stink bug populations that built up over the growing season disperse toward structures. Homes on the rural-suburban fringe, with wooded lot edges and older siding with weathered gaps, face the heaviest migration pressure — and that describes a significant share of Woodsboro’s housing stock.
This is the brown marmorated stink bug’s overwintering behavior — it’s predictable and happens every fall. As temperatures drop and daylight shortens, stink bugs that spent the summer feeding in fields and wooded areas begin searching for a warm structure to shelter in through winter. They’re attracted to sun-warmed surfaces, which is why south- and west-facing walls often show the heaviest aggregations. In Woodsboro, the surrounding agricultural fields provide large summer populations that disperse toward residential structures when crops are harvested and field cover disappears — typically September through November. The volume can feel sudden, but it’s driven by the same seasonal trigger every year.
Yes. Pest Shield’s stink bug treatment focuses on the exterior perimeter of your home — the products are applied outside, which keeps them away from interior living spaces where children and pets spend their time. EPA-approved products are used as standard, and nontoxic bio-pesticide options are available for households that want to minimize chemical exposure further. Troy will walk you through exactly what was applied and where, and can advise on any brief precautions relevant to your specific situation.
One treatment will knock down the current aggregation and treat the entry points stink bugs are targeting right now — and for some households, that’s enough for the season. But stink bug pressure in Woodsboro is cyclical: the same agricultural surroundings that drove this fall’s migration will drive next fall’s. Pest Shield’s Standard Care Plan — treatments every 60 days, exterior-focused, with a 100% effective guarantee and free retreatment between visits — is designed for exactly this kind of recurring seasonal pest. Troy will give you an honest read on whether ongoing service makes sense for your property after the inspection; he won’t recommend it if it isn’t warranted.
Under Pest Shield’s Standard Care Plan, if stink bug activity reappears between your scheduled 60-day treatments, Pest Shield comes back at no additional charge. The 100% effective guarantee means you’re not waiting until the next scheduled visit and paying again — you call, and the problem gets addressed. This free retreatment between visits is one of the reasons the Standard Care Plan’s bi-monthly cadence outperforms a standard quarterly schedule for seasonal pests like stink bugs.
Same-day and next-day service is the norm for Pest Shield across Frederick County. Dozens of customer reviews document Troy arriving the same day a call was placed — including on Sundays, at no extra charge. Stink bug aggregations aren’t typically the kind of emergency that requires a two-hour response, but if you’re seeing large numbers staging on your home and want treatment before they breach the structure, calling (301) 829-0060 in the morning will typically get you scheduled that day or the next. The free inspection happens at the same visit as treatment, so there’s no separate appointment to wait for.
