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Serving the Portland Metro & Vancouver Areas
Call 503-646-2119

The technicians at Guaranteed Pest Control Service Co are the most experienced in the industry and will help you to treat your current issue and prevent future infestations. Using non-chemical and chemical control methods, and the most current science in the industry, we'll help you protect your health and property.

Call 503-646-2119 to ask about our proactive maintenance services!


Cluster Fly

Medium-sized flies from 1/4- inch to 3/8-inch in length. They are black in color. They fold their wings flat over their abdomen when at rest.

House Fly

Adults are about 1/8-1/4 inches long, with the female being larger than the male. They are dull gray, with the face having 2 velvety stripes, each silver above and gold below. The thorax has 4 narrow black longitudinal stripes on dorsum. Mature lavra about 1/4-3/8 inches long. They are eyeless, legless and taper from the head back. They are a cream color.



Small, elongated, triangular insects, usually between 1/2 and 1 inch in length. Color is typically a shiny gray or silver. They have three characteristic long, thin appendages extending from the rear of the abdomen.


Black Widow Spider

Body may be up to 3/4-inch in length with the abdomen reaching 3/8-inch in diameter. The color is typically glossy black but may also be dark brown to light brown. Related widow spiders may be brown.

House Spider

The body ranges up to 3/8-inch in length, with a spherical abdomen. Typically brown or tan with various markings. "House" spiders are those web-building spiders common in the corners and garages of most homes and buildings.

Aggressive House Spider

Measures up to 3/4-inch in length and has a leg span measuring more than 1-1/2 inches. Color is usually brownish gray with a number of various markings. It is very difficult to distinguish it from its close relatives, the domestic house spider and the giant house spider (which do not have a dangerous bite).

Aggressive House Spider Bite

If a person accidentally traps the spider against his or her skin, the spider bites out of defensive reflex. Unfortunately, the hobo spider's bite may result in an ulcerating wound similar to that of the brown recluse spider. Allowing the bite to become infected only increases the potential skin damage. Any person receiving any perceived spider bite should consult a physician for treatment.