Pest control · Yakima & Tri-Cities
Perimeter pest control in Yakima and the Tri-Cities
An invisible barrier around the outside of the house, webbing swept from the windows and eaves, on a quarterly schedule from mid-March to the end of October.
Chapter 01
Where spiders and ants get into a house
Spiders, ants, earwigs, silverfish and beetles come indoors for the same reasons: shelter from predators, a steady supply of food, and a good place to breed. They do not walk through the middle of a wall. They follow the foundation, slip in under the eaves, and use the gaps around windows, doors, vents, light fixtures and fittings.
Colonial treats those entry points from the outside only. Their own reasoning is that exterior applications solve 90% of the issues homeowners call about, and that it keeps spray away from the inside of your house. They describe the barrier as invisible, and say a pest that crosses it does not survive the trip.
Colonial technician treating the perimeter of a front door, seen from behind
A barrier at the walls, plus the webbing swept away
The Foundation/Spider Barrier covers the foundation, first-floor eaves and windows, doors, vents, fixtures, fittings, hose bibs, and cracks or crevices. On the same visit the technician sweeps webbing off the windows, eaves and corners of the house.
Wasps and hornets are included, with an honest limit. Flying insects can build above the barrier, and Colonial says it cannot fully prevent a wasp from ever nesting on your house. What it does is knock down nests on every visit.
The applicators carry Washington State Department of Agriculture licenses, and their numbers are printed on the Meet the Team page. The materials are EPA approved, and the federal label says children and pets are safe once the application has dried.
Chapter 03
A quarterly season, about 60 days between visits
The first application lands in mid-March or early April, depending on the weather. After that the visits run about 60 days apart until the season closes in late October or early November. Colonial typically does not spray through winter unless the winter is unusually warm.
Riverbank properties get more pressure from insects. For those, the office can add visits for an additional charge, so mention the river when you request your estimate.
Because the work is all outside, the technician can do it while you are not home. Both offices offer pest control: Yakima at (509) 966-1655 and the Tri-Cities at (509) 371-1655. Local detail is on the Yakima pest control page and the Richland pest control page.
Colonial Lawn & Garden · WA L&I COLONLG022LA · Yakima (509) 966-1655 · Tri-Cities (509) 371-1655
Foundation/Spider Barrier
Where the barrier goes, and when.
Nine stops around the outside of the house, in the order Colonial lists them. Homes in Yakima follow the Yakima pest control page; Richland and the Tri-Cities have their own at pest control in Richland.
- Stop 01FoundationTreated around the home
- Stop 02First-floor eaves and windowsFirst floor
- Stop 03Doors
- Stop 04Vents
- Stop 05FixturesLight fixtures included
- Stop 06Fittings
- Stop 07Hose bibsOutdoor spigots
- Stop 08Cracks and crevices
- Stop 09Webbing sweptWindows, eaves and corners
Season window
Mid-March or early April, to late October or early November.
Visits are scheduled about 60 days apart. Riverbank properties can have more visits at an additional charge. Offices: Yakima (509) 966-1655 and Tri-Cities (509) 371-1655.
Perimeter pest control
Ticks show an even 60-day spacing from a mid-March start. Real dates follow the weather.