- (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 business license MDA #30263 and operating with over 75 years of combined pest management experience across the team. Owner Troy Yowell brings approximately 35 years of field experience — including pest management on U.S. military bases in Iraq and Afghanistan — and the company maintains an on-staff entomologist, Jeffrey Allwine, whose background includes species-level identification and tick-relevant diagnostic work. Pest Shield has earned Best of Frederick MD (2021) and Best of Nextdoor recognition four consecutive years (2021–2024), with 338+ five-star reviews across Google and HomeAdvisor.
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.
Myersville sits in the western Frederick County foothills at the base of Catoctin Mountain — a landscape defined by wooded hillsides, active deer corridors, rural lot sizes, and proximity to agricultural land. That combination creates tick habitat conditions that are meaningfully more intense than what homeowners in eastern Frederick County typically face. You don’t need to find a tick on your child or dog to have a real tick problem. If your property backs to woods, borders a field edge, or sits along a deer travel route, the risk is already present.
Ticks don’t move far on their own — they wait. The behavior is called questing: a tick climbs to the tip of a blade of grass or low shrub, holds its front legs out, and waits for a warm-blooded host to brush past. That means the highest-risk zones on any residential property are the transition areas — where mowed lawn meets unmowed brush, leaf litter, or tree lines. On a typical Myersville lot, those edges are everywhere.
Three tick species are established in Frederick County and carry distinct health risks:
The rodent connection matters here: white-footed mice are the primary reservoir host for the Lyme disease bacterium, and they’re abundant in the wooded and agricultural surroundings of western Frederick County. Deer ticks pick up the pathogen from infected mice as larvae, then carry it through their nymph and adult stages. Properties near active deer corridors — which describes much of the Myersville area along the Catoctin ridge — sustain both host populations year-round. Tick pressure in this environment doesn’t disappear in winter; it slows, but black-legged ticks remain active in above-freezing temperatures.
60+ years of combined experience. Tell us what you’re seeing — we’ll come look, no obligation.
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 →
Very satisfied with the work. Responded promptly to the service request to take care of yellow jacket problem by the basketball hoop, showed up on time, discussed the treatment plan, advised on precautions to be taken, completed the job in no time. The charges were reasonable. It was a slam dunk hiring Pest Shield and have no hesitation in recommending Pest Shield.
Balajee Shanmugam · July 2014 Read on HomeAdvisor →
General pest & rodent control
Every new client relationship starts with a free property inspection. Before any treatment is recommended, Troy or a Pest Shield, Inc. technician walks the property to assess tick habitat — yard edges, brush lines, leaf litter accumulation, low vegetation, and the transition zones where ticks concentrate. The inspection identifies where treatment will have the most impact and confirms whether the property’s specific conditions call for targeted spot treatment, full perimeter treatment, or both. Nothing is recommended until the property has been assessed.
Pest Shield’s treatment approach is exterior-first by design. Ticks live and quest in outdoor vegetation — not inside your home — so that’s where treatment is applied: along the yard’s perimeter, at the lawn-to-woods transition, in brush lines, and in leaf litter zones where ticks harbor between host contacts. This keeps EPA-approved products where they’re needed and out of your living space. As one long-term customer described it: “Pest Shield treats your house primarily from the outside to prevent pests from ever getting into your house and keeps the chemicals out of your home, protecting your family.”
For ongoing tick protection, Pest Shield offers the Standard Care Plan — treatment every 60 days on a bi-monthly cadence, which is more frequent than the industry-standard quarterly schedule. The plan is exterior-focused, requires little to no interior treatment, and carries a 100% effective guarantee: if tick activity reappears between scheduled visits, Pest Shield returns at no additional charge. You don’t need to be home for exterior treatments.
Whether a one-time treatment or the Standard Care Plan makes more sense depends on your property and your situation — Troy will tell you honestly after the inspection. For properties with significant wooded edges, active deer pressure, or a history of tick encounters, the 60-day cadence tends to outperform single-season treatment because it interrupts tick activity across the full spring-through-fall peak period and provides a buffer into the mild-winter months when black-legged ticks remain active.
Pest Shield uses EPA-approved products for tick treatment, and bio-pesticide options are available for families with children and pets. Troy advises on post-treatment precautions before leaving — what to expect, when the treated areas are safe to re-enter, and what you can do to reduce tick habitat between visits. Same-day and next-day scheduling is available for Myersville properties; call (301) 829-0060 or request a free inspection online.
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.
Myersville sits along US-40 in the western Frederick County foothills, roughly eight miles west of Frederick and just east of the Catoctin Mountain ridge. The surrounding area includes Middletown to the south, Wolfsville to the west, and Boonsboro Road corridors connecting to agricultural land in multiple directions. I-70 runs along the southern edge of the community, but the residential character of Myersville is defined by wooded hillsides, larger rural lots, and the kind of semi-rural surroundings that put most properties in direct contact with natural landscape.
The Catoctin Mountain corridor sustains some of the highest white-tailed deer density in Frederick County, and deer movement through residential lots in Myersville is common — particularly along the wooded edges where properties back to hillside forest. That deer pressure, combined with the abundant white-footed mouse populations in the area’s agricultural and wooded margins, creates the host-tick cycle that makes black-legged tick exposure a genuine year-round concern here. Properties with mature tree cover, unmowed borders, or proximity to the mountain ridge face tick conditions that are more comparable to rural western Maryland than to suburban pest control in Myersville neighborhoods.
Three tick species are established in Frederick County: the black-legged tick (Ixodes scapularis), the American dog tick (Dermacentor variabilis), and the lone star tick (Amblyomma americanum). The black-legged tick — also called the deer tick — is the primary Lyme disease vector in Maryland, and it’s the species of greatest concern in the wooded, deer-active surroundings of western Frederick County. The American dog tick carries Rocky Mountain spotted fever, which is less common but can be severe. The lone star tick is associated with ehrlichiosis and has expanded its range into Maryland over the past two decades. All three are active on residential properties in the Myersville area.
Pest Shield uses EPA-approved products for tick treatment, and bio-pesticide options are available for families with children and pets. Treatment is applied to exterior areas — yard edges, brush lines, and vegetation — not inside the home. Before leaving, Troy advises on post-treatment precautions, including when treated areas are safe to re-enter. If you have specific concerns about a child’s health condition or a pet’s sensitivities, mention it when you call — Troy takes those situations seriously and adjusts recommendations accordingly.
For most properties in the Myersville area — where wooded edges, deer corridors, and rodent habitat are part of the landscape — a single treatment provides limited-duration protection. Ticks are reintroduced continuously by deer, rodents, and other wildlife moving through the property, so a one-time application addresses current activity but doesn’t prevent reinfestation. Pest Shield’s Standard Care Plan treats every 60 days on a bi-monthly cadence, which is more frequent than the industry-standard quarterly schedule and is designed to interrupt tick activity across the full spring-through-fall peak and into mild-winter periods when black-legged ticks remain active. The plan includes a 100% effective guarantee and free retreatment between scheduled visits if activity reappears. Troy will give you an honest read after the free inspection on whether ongoing service makes sense for your specific property — he won’t recommend it if it doesn’t.
Spring is the most important window — American dog tick and lone star tick activity peaks from April through July, and black-legged tick nymphs (the life stage most likely to transmit Lyme disease because they’re small enough to go unnoticed) are most active from May through early summer. Starting treatment in early spring, before peak nymph activity, gives the best protection through the highest-risk months. That said, black-legged ticks remain active in above-freezing temperatures through fall and into mild winters, so year-round protection is the most complete approach for properties with significant wooded edge or deer pressure — which describes most Myersville residential lots.
The free inspection is a property walkthrough — Troy or a Pest Shield technician assesses your yard’s tick habitat, identifies the highest-risk zones (typically yard edges, brush lines, leaf litter, and the transition between mowed lawn and natural vegetation), and explains what they’re seeing. No treatment is recommended until the inspection is complete. There’s no obligation to proceed, and Pest Shield has a documented pattern of telling customers when treatment isn’t warranted. To schedule, call (301) 829-0060 — same-day and next-day availability is typical for Myersville properties.
