.png)
Markham Pest Control Services
From Unionville's heritage homes with century-old wood framing to Cornell and Berczy Village's new builds on former farmland, Guard More Pest Control's MECP-licensed technicians understand the full range of pest pressure Markham's contrasting housing stock produces.
At Guard More Pest Control, we are committed to protecting residential and commercial properties against pests across Markham.
Service Areas: Unionville, Markham Village, Cornell, Box Grover, Berczy Village, Cathedraltown, Cachet, Raymerville, Wismer, Milliken Mills, Thornhill (Markham Side), Angus Glen
Service Areas: Unionville, Markham Village, Cornell, Box Grover, Berczy Village, Cathedraltown, Cachet, Raymerville, Wismer, Milliken Mills, Thornhill (Markham Side), Angus Glen
MECP-Licensed Pest Control Technicians (Ministry of the Environment, Conservation and Parks)
National Wildlife Control Operators Association (NWCOA) Member
Same-Day Inspection and Satisfaction Guaranteed
HomeStars 2026 'Best Of' Award Winner
100+ five-star reviews
What Our Customers are Saying
We had a serious issue with raccoons in the attic, and Gary handled it flawlessly from start to finish. He quickly identified the problem and used a humane and effective trapping method to remove the raccoons. What really impressed me was that he didn’t just do a quick fix—he returned after a week to make sure there were no more animals left, which gave us real peace of mind.
Gary went above and beyond with the prevention work. He installed durable wire mesh over every roof and plumbing vent to ensure nothing could get back in.In addition to the high-quality work, his pricing was very reasonable, especially considering the level of service and attention to detail provided.Professional, thorough, and detail-oriented—Gary truly exceeded our expectations. I highly recommend his services to anyone dealing with wildlife issues in their home.
- Ana Granda
Gary went above and beyond with the prevention work. He installed durable wire mesh over every roof and plumbing vent to ensure nothing could get back in.In addition to the high-quality work, his pricing was very reasonable, especially considering the level of service and attention to detail provided.Professional, thorough, and detail-oriented—Gary truly exceeded our expectations. I highly recommend his services to anyone dealing with wildlife issues in their home.
- Ana Granda
Called Gary and he was able to come almost immediately. He did a great job and went above and beyond. Explained everything in detail and was very thorough. He took his time to find and patch up/cover up any possible entry points where rodents could enter, inside and outside. He even had a drone to check the roof. This is my third exterminator and I will not be looking elsewhere! Extremely fair pricing and did a way better job than my last experiences. Highly recommend.
- Marc Heron
- Marc Heron
I have an ongoing raccoon problem in my backyard. Gary from Guard More Pest Control Inc exceeded my expectations! He was professional, helpful and friendly. He removed the raccoon feces off of my deck and cleaned up the area (this is an after photo of the cleanup, where the wood used to be a black colour). He sprayed animal repellent and bug spray at the front of my house and in my backyard. He also put a mesh cover to prevent the raccoons from returning (see attached picture). Gary went above and beyond with the services and his prices are reasonable. I'm very happy that Gary reached out to me, and I would definitely recommend him to family and friends!
- Sharon L.
- Sharon L.
Strongly recommend! Gary helped us with our small bed bug infestation for a very reasonable price. He's a hard worker with a customer-centric approach. The preparation guides were a bit off in several places, but Gary clarified and answered my questions very promptly and in detail. Both treatment sessions went extremely smooth.
- Alexander Churikov
- Alexander Churikov
Complete Pest Control Services
for Markham Homes and Businesses
Every treatment is species-specific. We identify the pest, locate the colony or entry point, and apply the right combination of Health Canada-registered and approved products. We do not use a not a generic spray-and-pray approach because that will never remove the pests.
German cockroaches spread through shared plumbing and electrical chases in Markham's condos, restaurants, and apartment buildings — a single unit can re-infest an entire floor. We use gel baits, non-repellent residual treatments, and insect growth regulators, and coordinate building-wide treatment for multi-unit properties. All treatments meet York Region Health compliance requirements for food businesse.
COCKROACH CONTROL
Yellow jacket and bald-faced hornet nests peak July through September in Markham's older neighbourhoods, often established under deck boards, in wall voids, or in overhanging soffits. We treat nests directly at dusk when foragers are inside, using residual dustable insecticides that prevent re-establishment. Emergency same-day service available.
WASP CONTROL
Markham is Canada's #6 rattiest city. We locate all entry points, install tamper-resistant bait stations, seal gaps with heavy-gauge steel, and return to confirm elimination. Active construction zones are displacing established rat colonies into nearby homes right now.
RODENT CONTROL
Raccoons enter attics through roof-soffit intersections, plumbing mats, and damaged fascia, which are especially common in Markham's dense neighbourhood housing stock. From April to August, kits must be hand-removed before sealing. We are NWCOA-certified, use humane reunion-box protocols during baby season, and provide a lifetime warranty on all exclusion coverings.
RACCOON REMOVAL
Grey squirrels have two litter seasons in Markham: March to April and July to August. They chew through roof vents, soffits, and fascia to access warm attic spaces. We install one-way exclusion doors, confirm all animals have exited, and seal every secondary access point with galvanized steel. Lifetime guarantee on all coverings installed.
Read more
The Guard More Process
- Inspect & Identify: We identify the exact species before we do anything else because different pests require different treatments. Pharaoh ants, carpenter ants, rats, and raccoons all require completely different protocols. Wrong identification means wasted treatment and a recurring problem. We inspect entry points, nest sites, conducive conditions (moisture, food, access), and map the full extent of the infestation.
- Targeted Treatment: We apply the appropriate combination of Health Canada-registered and approved products (insecticides, rodenticides, bait stations, traps, exclusions) based on the species and infestation severity. Some examples are slow-acting non-repellent baits for ants and cockroaches (so the active ingredient reaches the queen via trophallaxis), tamper-resistant rodent stations with sealed entry points, exclusion hardware for wildlife, and residual perimeter treatments where warranted. Never a one-size-fits-all spray.
- Seal & Exclude: For rodents and wildlife, treatment without exclusion is temporary. We seal entry points with commercial-grade materials — 16-gauge galvanized steel mesh, heavy-gauge flashing, and expansion-resistant sealants — after confirming the structure is clear. All exclusion coverings on wildlife work come with a lifetime warranty. For insects, we advise on structural and environmental factors that will need remediation to prevent re-infestation.
- Follow-Up & Guarantee: We provide a 30 to 60 days for most insect treatments because the multi-month life cycles of ants, cockroaches, and bed bugs mean a single visit is rarely sufficient based on infestation level. Bed bugs always require 2 visits to break the reproduction cycle and known as 'super bugs' due to ability to grow resistance to chemicals over time. Our work is backed by a written re-treatment guarantee. If the pest returns within the guarantee period, we return at no charge.
Markham Pest Trends You Need to Know
Carpenter Ants in Unionville & Markham Village: Markham's heritage core is the carpenter ant epicentre of York Region. Century-old wood-frame homes with fieldstone foundations and overhanging hardwoods provide both the moisture-damaged wood for satellite colonies and the parent colony habitat in nearby dead wood. Winged ants seen indoors in May or June confirm a mature colony already established in the structure. Early treatment before peak swarm season prevents the colony from dispersing into new wood.
↑↑ Peak ant treatment demand: May 1 – June 30
↑↑ Peak ant treatment demand: May 1 – June 30
Wildlife Pressure Near Rouge Park & Milne Dam: Markham sits at a unique intersection of urban density and protected greenbelt that creates year-round pest pressure unlike anywhere else in York Region. The Rouge National Urban Park and Milne Dam Conservation Area run directly alongside Box Grove, Cornell, and Berczy Village which acts as a funnel directing raccoons, skunks, and mice toward homes every season. This wildlife pressure peaks sharply in September and October as wildlife seeks winter denning sites. Properties within two blocks of the park edge see significantly more calls than those further away.
↑↑ Highest wildlife calls within 2 blocks of greenbelt edge
↑↑ Highest wildlife calls within 2 blocks of greenbelt edge
Field Mice in Cornell, Berczy & Cathedraltown: Markham's newest communities were built on former farmland, the farmland's past problems don't disappear when the houses put up. The displaced field mice infiltrate new construction through gaps around utility penetrations, wiring, and HVAC connections that builder-grade sealing doesn't fully address. New homeowners are frequently surprised when mice appear within the first year of occupancy. A rodent exclusion inspection in the first 12 months prevents the pattern from establishing.
↑! Recommended: rodent exclusion inspection within year one
↑! Recommended: rodent exclusion inspection within year one
Cockroaches Along the Highway 7 / Pacific Mall Corridor: Markham's tech corridor and the Pacific Mall food-service strip along Highway 7 and Victoria Park Avenue sustain elevated cockroach and ant populations in commercial kitchens. This pressure is structural with high restaurant density plus shared building infrastructure means single-unit treatment rarely produces lasting results without building-wide coordination.
↑↑ Commercial corridor pressure: Highway 7 / Victoria Park Ave
↑↑ Commercial corridor pressure: Highway 7 / Victoria Park Ave
Markham Service Areas
Fast local response across all Markham areas. We know the pest patterns specific to each neighbourhood.
Unionville: Carpenter Ants · Raccoons · Mice
Markham Village: Carpenter Ants · Raccoons · Wasps
Cornell: Mice · Wasps · Ants
Box Grove: Raccoons · Skunks · Mice
Berczy Village: Wasps · Mice · Wildlife
Cathedraltown: Mice · Ants · Wasps
Cachet: Mice · Wasps · Carpenter Ants
Raymerville: Wildlife · Mice · Ants
Wismer: Carpenter Ants · Mice · Wasps
Milliken Mills: Cockroaches · Rodents · Ants
Thornhill (Markham side): Wildlife · Carpenter Ants · Mice
Angus Glen: Wasps · Wildlife · Ants
Keep Your Home/Business Pest-Free Today
Do you have a pest problem that needs to be looked at right away? Contact Guard More Pest Control about your pests and we'll work on solving your pest problem within 24 hours.