Trusted Across British Columbia and Alberta

Book early! Spring appointments fill quickly in British Columbia and Alberta, and Saskatchewan.

Not sure when to treat? Our guide to the best time to spray for ants in North Vancouver breaks down the optimal treatment window for every species month by month.

How do I keep spiders out of my house in British Columbia?

The most effective way to keep spiders out of your home in British Columbia is a professional perimeter pest treatment applied around your entire foundation in spring before spiders become active. A two product perimeter treatment using two different active ingredients creates a barrier at ground level and around window frames, door frames, and vents where spiders enter. DIY sprays provide temporary protection but miss critical entry points and require ideal weather conditions. For homes with heavy spider activity or webbing around rooflines and outdoor lighting, an enhanced spider add-on treatment targeting eaves and soffits provides additional protection.

Why are there so many spiders around my house in fall in BC and Alberta?

Spiders become more visible around homes in British Columbia and Alberta during fall because they are seeking warmth and shelter before winter. Species like house spiders, wolf spiders, and cellar spiders move toward foundations, window frames, and door frames as temperatures drop. A perimeter pest treatment applied in spring creates a residual barrier that reduces spider entry through summer and into fall. For homes in heavily wooded areas or near water, a fall perimeter treatment provides an additional layer of protection before overwintering pests settle in.

What is the best spider control for homes near trees or water in British Columbia?

Homes near forests, rivers, or lakes in British Columbia tend to have higher spider populations because these environments support more insects that spiders feed on. A professional perimeter treatment with two products and two full passes around the foundation provides the strongest barrier for these properties. For homes in areas like the North Shore, Maple Ridge, Pitt Meadows, Coquitlam, and the Sea to Sky corridor, an enhanced spider add-on treatment is recommended. The add-on includes a third pass targeting door frames, window frames, eaves, soffits, and roofline edges where spiders build webs.

How do I get rid of carpenter ants around my foundation in Alberta?

Carpenter ants around your foundation in Alberta are best controlled with a professional perimeter treatment that creates a chemical barrier where ants travel along the base of your home. A two product treatment using two different active ingredients prevents ants from building resistance and provides broader protection than a single product spray. The first visit in spring targets the foundation base and soil line where carpenter ants are most active, and a second visit six to eight weeks later reinforces the barrier through peak summer activity. Booking in March or April before carpenter ants fully emerge gives you the best results for the season.

When do ants come out in spring in BC and Alberta?

In British Columbia, ants typically become active in March and April as soil temperatures rise, with carpenter ants often appearing first around foundations and in damp wood. In Alberta, ant activity usually begins in April and picks up through May depending on how quickly temperatures warm up. This is why the ideal time to book a perimeter pest treatment is March or April, before ants establish trails and entry points into your home. A two visit perimeter program with the first application in early spring and a second visit in late spring or early summer provides season long protection.

What is the best time to spray for bugs around your house in BC?

The best time to spray for bugs around your house in British Columbia is March or April, before crawling pests like ants, spiders, sowbugs, and earwigs become fully active. Applying a perimeter treatment early in the season creates a barrier before pests establish entry points into your home, which is far more effective than treating reactively once you already see bugs inside. A professional two visit program with a spring application and a summer follow up provides protection through the entire pest season. Products applied by trained technicians using commercial grade formulations last longer and cover more entry points than store bought sprays.

What pests should I worry about in spring in Alberta?

In Alberta, the most common spring pests around homes include carpenter ants, pavement ants, spiders, sowbugs, earwigs, and various beetles that emerge as the ground thaws. These crawling pests travel along foundations and enter homes through cracks, gaps around windows and doors, weep holes, and utility entry points. A perimeter pest treatment applied in April or May creates a barrier around your entire foundation that targets these pests before they get inside. Booking before peak season ensures your home is protected ahead of the first wave of spring pest activity.

Is professional perimeter pest control worth it compared to DIY sprays?

Professional perimeter pest control is significantly more effective than DIY sprays for most homeowners. Store bought products use a single active ingredient and require perfect application in dry weather conditions, and most homeowners miss critical entry points or apply too thin for lasting protection. A professional two product perimeter treatment uses two different active ingredients applied in two full passes around the foundation, covering ground level contact areas and higher entry points around windows, doors, vents, and utility penetrations. Commercial grade products are not available in retail stores and are applied by trained technicians who know exactly where pests enter homes in your specific climate.

What does a perimeter pest treatment actually do?

A perimeter pest treatment creates a chemical barrier around the outside foundation of your home that kills or repels crawling pests before they can get inside. Technicians apply product along the foundation base where the wall meets the ground, and around all entry points including window frames, door frames, vents, weep holes, and where utility lines enter the home. The treatment controls ants, spiders, sowbugs, earwigs, millipedes, beetles, and overwintering pests like boxelder bugs and cluster flies. Two visits spaced six to eight weeks apart keep your home protected through spring and summer.

How much does perimeter pest control cost in Canada?

Perimeter pest control pricing in Canada varies based on home size, property layout, and the scope of the program. Pest Detective's two visit perimeter treatment program starts at $435, which includes two visits with two different products and two full passes around your foundation during each visit. Additional options like the spider add-on for homes with heavy webbing or an optional fall treatment for overwintering pests are available at additional cost. Free quotes are provided before any work begins so you know the exact cost for your property.

Is perimeter pest treatment safe for pets and children?

Yes, perimeter pest treatment is safe for pets and children once the product has dried, which typically takes 30 to 60 minutes after application. The treatment is applied to the exterior foundation of your home, not inside your living spaces, which further reduces any contact. All technicians hold a valid Pesticide Applicator Certificate as required by provincial regulations. Your technician will let you know when it is safe to resume normal activity around treated areas.

Who provides perimeter pest control in BC and Alberta?

Pest Detective provides professional perimeter pest control across British Columbia and Alberta, with local teams serving Vancouver, North Shore, Burnaby, Surrey, Tri-Cities including Coquitlam, Port Coquitlam, and Port Moody, Maple Ridge and Pitt Meadows, Richmond, Victoria, and the Fraser Valley. In Alberta, Pest Detective serves Calgary, Airdrie, Cochrane, Chestermere, and Okotoks. The company is 100% Canadian owned and has been operating since 1986 with over 37 years of experience treating homes across both provinces. Call 877-787-9574 to book or request a free quote for your location.

What are overwintering pests and how do I stop them from getting into my house?

Overwintering pests are insects that enter homes in late summer and fall seeking warmth and shelter to survive winter, then become active again in spring when temperatures rise. Common overwintering pests in British Columbia and Alberta include boxelder bugs, Asian lady beetles, cluster flies, and stink bugs. They enter through tiny gaps around windows, doors, soffits, and foundation cracks, and can be difficult to control once they are already inside wall voids. The most effective approach is a perimeter treatment applied before they migrate to your home, ideally in spring with an optional fall treatment in September or October.