Common Rats in Eastern Washington and Northern Idaho

As fall settles into Spokane, WA and Coeur d'Alene, ID, homeowners and business owners may begin noticing more signs of rodent activity. October and November can bring an increase in rat activity around buildings as temperatures drop and outdoor conditions become less favorable.

When colder weather arrives and snow begins to fall, rats may seek out warm, protected areas such as attics, crawl spaces, garages, sheds, walls, and other sheltered locations. Eden Advanced Pest Technologies can help identify the source of the activity and determine the most effective way to address it.

Understanding the common rats found throughout the region can also help property owners recognize where these rodents may be hiding, what may be attracting them, and how their behavior can differ. Knowing what type of rat is present can provide valuable insight into the areas of a property that should be inspected.

How to Identify Common Rats

Although these rodents can look similar at first glance, their appearance, behavior, and preferred nesting locations can be quite different. Understanding the characteristics of common rats found throughout Eastern Washington and Northern Idaho can help you determine what type of rodent may be present:

1. Norway Rat: Norway rats are generally stockier and heavier than roof rats, with brownish-gray coloring and a tail that is shorter than the length of their body. They typically stay at or below ground level and may nest in burrows, around foundations, and in lower portions of buildings such as crawl spaces and basements.
2. Bushy-tailed Woodrat: The bushy-tailed woodrat is much easier to distinguish by its large, bushy tail. It is native to the region and is commonly associated with rocky areas, although it can also use abandoned structures and buildings for shelter. These rodents are often called pack rats because of their habit of collecting and storing various objects around their nests.
3. Roof Rat: Roof rats are more slender and darker than Norway rats and have a tail that is longer than their body. As their name suggests, they are excellent climbers and commonly nest in elevated locations such as attics, trees, rooflines, and dense vegetation.

Where Do These Rats Nest?

Their preferred locations can provide useful clues about which species may be present. Norway Rats generally favor ground-level locations and may burrow along foundations, beneath structures, or in moist areas. Roof Rats prefer elevated areas and can move through trees, rooflines, attics, and other high locations. Bushy-tailed woodrats are commonly associated with rocky habitats but may also take advantage of garages, sheds, cabins, barns, and other structures that provide shelter.

Their behaviors can also differ. Norway and Roof Rats are primarily nocturnal and may travel along established routes while searching for food and water. They can also establish multiple nesting locations. Bushy-tailed woodrats are nocturnal as well and are known for collecting vegetation and other objects and storing them around their den sites.

Can Rats Damage Your Property?

Yes. Rats can cause considerably more trouble than an occasional sighting. Their activity can lead to property damage, sanitation concerns, and other problems, particularly when they establish nests inside or around a building. Depending on the species and where they are active, common problems can include:

• Food Contamination: Norway and roof rats can contaminate food and surfaces with droppings and urine.
• Insulation Damage: Rats may disturb, damage, or use insulation as nesting material.
• Chewed Wiring: Rats can gnaw through electrical wiring, creating costly damage and potential safety concerns.
• Structural Damage: Gnawing and nesting activity can damage wood, walls, and other building materials.
• Nesting and Sanitation Concerns: Bushy-tailed woodrats may bring nesting materials, store food, and leave droppings in garages, sheds, barns, and other structures.
• Unwanted Noises: Scratching, gnawing, and scrambling sounds inside walls, attics, and crawl spaces can be signs of active rodent movement.

Can Rats Carry Diseases or Parasites?

Wild rodents can carry organisms that may pose health concerns for people and pets. Rats can spread disease through contact with urine, droppings, saliva, bites, or contaminated materials, and they may also carry external parasites such as fleas, mites, and ticks.

For this reason, signs of rodent activity should be taken seriously. Droppings, gnaw marks, nesting materials, unusual odors, and scratching sounds may indicate that rodents have established themselves inside or around a structure. Professional rodent control can help identify the source of the activity and address the problem.

Do Different Rats Require Different Treatments?

Yes. The basic goal of professional rat control is to identify the rodent, locate its activity and entry points, address conditions that may be encouraging it to remain, and prevent future access. However, the most effective approach can vary depending on the species, its behavior, and where it is nesting:

• Norway Rats: When Norway rats are nesting around foundations, crawl spaces, or other lower areas of a structure, control efforts may focus on ground-level entry points, harborage areas, and conditions that provide food or shelter.
• Roof Rats: Roof rat control may require greater attention to attics, rooflines, trees, and other elevated areas. Identifying how these agile climbers are reaching the building can be an important part of developing an effective control strategy.
• Bushy-Tailed Woodrats: Because bushy-tailed woodrats often occupy rural structures such as sheds, garages, barns, and cabins, control may focus on their nesting locations, access points, and surrounding habitat.

Identifying the species and determining where it is nesting allows our technicians to develop a control plan suited to the specific circumstances of your property.

When Should You Call a Professional Rodent Exterminator?

Fall and winter are not the time to overlook signs of rat activity. Hearing movement inside walls or ceilings, finding droppings, noticing gnaw marks, discovering nesting material, or repeatedly seeing rats around your property can all indicate an active rodent problem. Professional help can identify the source and address the issue before the infestation becomes more established.

Homeowners and businesses throughout Spokane, WA and Coeur d'Alene, IDo can turn to Eden Advanced Pest Technologies for professional rodent control. Our staff brings more than 25 years of combined experience to every service, helping us identify the rodent species, locate potential entry points, and develop a control and prevention plan suited to your property.

Contact Eden Advanced Pest Technologies to schedule a professional rodent inspection and take the first step toward getting your property back under control.