- (301) 829-0060
- Mt. Airy, MD
- info@pestshieldinc.com
Pest Shield, Inc. has provided licensed pest management across Frederick County since 2011, holding Maryland Department of Agriculture license #30263 and serving New Market homeowners directly — no franchise, no call center, no subcontractors. Owner Troy Yowell brings approximately 35 years of pest management experience to every service call, backed by a team with over 75 years of combined experience and an on-staff entomologist, Jeffrey Allwine. Pest Shield carries a 5.0 rating across 338+ reviews from homeowners throughout Frederick, Carroll, and Montgomery counties.
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.
The problem usually announces itself the same way: you step onto the deck after dinner and within minutes you’re back inside. Kids can’t play in the yard past 6 p.m. A backyard gathering gets cut short. The outdoor space you built and maintain becomes effectively off-limits for the four or five months you most want to use it.
New Market’s landscape is well-suited to mosquitoes in ways that aren’t always obvious. The town sits at the rural-suburban edge of eastern Frederick County, where residential lots back up to mature tree lines, wooded corridors, and the creek drainages that feed into the Monocacy watershed. Shade-heavy yards with dense shrubs and ornamental plantings give mosquitoes exactly what they need between feedings: cool, humid resting sites where they wait out the heat of the day. Low-lying areas and decorative features — birdbaths, plant saucers, clogged gutters, any depression that holds water after rain — provide breeding habitat within a few feet of where your family spends time.
Two species drive most of the pressure on New Market residential properties:
Mosquito pressure in Frederick County follows a predictable arc: populations build from late May as temperatures stabilize, peak through July and August when warm nights and periodic heavy rain accelerate breeding cycles, and taper through September and into October. The window when your yard is most affected is also the window when you most want to be outside — which is why a single treatment at the start of the season rarely holds through the peak.
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 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 →
I have been working with Troy for a year now and I would never even consider using another company. On-time, high quality, dependable and customer-centric are words that come to the top of my mind. In an industry filled with folks out to make a fast dollar, Troy is one of the few that is more concerned about doing the job right no matter what it takes. Having pest issues? Don’t think twice about contacting him; you’ll be glad you did.
Raymond Balestino · November 2022 Read on Google →
General pest & rodent control
Pest Shield’s mosquito treatment starts with a property inspection — identifying where mosquitoes are resting, where water is collecting, and which areas of the yard are generating the most pressure. The treatment itself targets resting sites: the underside of shrub leaves, dense vegetation, shaded areas along fence lines and foundation plantings, and any other cool, humid harborage where mosquitoes spend the hours between feedings. This exterior-first approach addresses the population where it lives, not just where it’s visible.
Because mosquito pressure in Central Maryland runs from late spring through early fall — and because a single application breaks down over time — Pest Shield structures mosquito service under the Standard Care Plan:
| What’s Included | Detail |
|---|---|
| Treatment cadence | Every 60 days (bi-monthly) — more frequent than the industry-standard quarterly schedule |
| Guarantee | 100% effective guarantee |
| Between-visit coverage | Free retreatment if mosquito activity reappears before your next scheduled visit |
| Scheduling flexibility | No need to be home for treatment — complete exterior focus |
The 60-day cadence is calibrated to Maryland’s mosquito season. Starting treatment in late April or May means you’re protected before peak pressure builds; continuing through September means you don’t lose the back half of the season. If activity picks up between scheduled visits — after a stretch of heavy rain, for example — Pest Shield returns at no additional charge.
Treatment products are EPA-approved. For families with children and pets, Pest Shield offers bio-pesticide options that are effective against mosquitoes while being safe for the people and animals using the yard. Troy will discuss the appropriate product choice for your property during the inspection — the goal is a treated yard your family can actually use, not one you have to avoid. One practical note: reducing standing water on your property between visits — emptying plant saucers, clearing gutters, addressing low spots — meaningfully extends the effectiveness of each treatment by eliminating breeding sites that chemical treatment alone can’t address.
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 along US-70 and MD-75, bordered by the wooded creek corridors and agricultural land that characterize this stretch of the county between Frederick and the Carroll County line. Nearby communities including Monrovia, Ijamsville, and Lake Linganore share similar landscape conditions — mature tree canopy, low-lying drainage areas, and the humid summer climate of the Monocacy watershed region.
That landscape creates above-average mosquito pressure on residential properties. Wooded lot lines and shade gardens hold the moisture and cool temperatures mosquitoes seek as resting habitat. Seasonal rain events — common in Frederick County from May through August — replenish the small standing water sources that Aedes albopictus breeds in within days. The Standard Care Plan’s 60-day cadence is designed to maintain effective coverage across this full seasonal window — and for homeowners dealing with additional pest pressure, pest control in New Market extends that protection across the full range of pests common to this landscape.
Yes — Pest Shield uses EPA-approved treatment products and offers bio-pesticide options specifically for properties where children and pets are regularly in the yard. Troy will discuss product selection during the inspection based on your property and family situation. The exterior-first treatment approach means products are applied to vegetation and resting sites, not to surfaces your family directly contacts. Pest Shield has documented experience treating homes with young children and dogs, and product safety for occupied households is a standard part of how treatment is planned.
A single treatment will reduce mosquito activity, but it won’t hold through the full season. Mosquito pressure in Central Maryland runs from late May through September, and treatment products break down over time — particularly after rain. Pest Shield’s Standard Care Plan addresses this with a 60-day bi-monthly treatment cadence, a 100% effective guarantee, and free retreatment between scheduled visits if activity reappears. For New Market properties with wooded surroundings and nearby creek corridors continuously reintroducing mosquitoes, ongoing treatment is what actually keeps the yard usable — not a one-time application.
Late April to early May is the right window to start in Central Maryland. Mosquito populations begin building as temperatures stabilize above 50°F consistently, and starting treatment before peak pressure develops means you’re protected when the season actually hits rather than catching up to it. Waiting until you’re already getting bitten regularly — typically mid-June or later — means you’ve already lost the most comfortable part of the outdoor season. A free inspection from Pest Shield will confirm current conditions on your property and help time the first treatment appropriately.
Eliminating standing water is the single most effective thing a homeowner can do to reduce mosquito breeding between professional treatments. Empty plant saucers and birdbaths every few days — Aedes albopictus can complete a breeding cycle in less than a week in very small water volumes. Clear gutters so they drain freely after rain. Check for low spots in the yard that pool after heavy rain and consider grading or filling them. Tarps, buckets, and any container that holds water are also breeding sites. These steps don’t replace professional resting-site treatment, but they meaningfully extend how long each application stays effective.
Yes — tick control in New Market is a service Pest Shield provides, and the treatment targets the same habitat as mosquito service: vegetation, leaf litter, shaded areas along lot lines and fence lines. For New Market properties with wooded surroundings, treating for both pests on the same visit is practical and efficient. The Standard Care Plan’s 60-day cadence covers general pest pressure including ticks. Ask Troy about combining mosquito and tick treatment when you call for your free inspection — (301) 829-0060.
