Bayside Service 
Professional Pest Control

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Rodents (Rodentia)

Mice and rats carry many diseases that should be of concern and they can be transferred to humans via fleas, urine, feces, and saliva.  They reproduce rapidly to compensate for their short life span (usually around one year).  Their teeth grow extremely fast and it is necessary for them to continuously chew on things.  Because of this, they are a serious fire hazard due to chewing the insulation off of wiring among other things. Rats and mice eat the same foods as humans and prefer fresh fruits, vegetables, and nuts. Generally they are nocturnal although you may on occasion see them during the day.  They do not have good eye site and tend to run alongside walls for security.  They rely heavily on sense of smell and touch and use established scent trails.   Other rodents can use these trails to find entrance into your home or business.  Rats and mice can swim, jump and are very intelligent.  They can find shelter in wall voids, attics, crawl spaces, electrical appliance, furniture, and other areas.

Below are the some of the common rodents that can be a problem in the Pacific Northwest.  Please click or scroll down for more information.


You can tell the difference between a baby rat and a baby mouse by the feet.  The rat’s feet are abnormally large in proportion to the size of their body.  There are two types of rats found in Washington:  The Norway Rat and the Roof Rat.

Norway Rat (Rattus norvegicus) aka Brown Rat

Norway Rat

Roof Rat (Rattus rattus)  aka Black Rat

Roof Rat

Treatment for Mice & Rats:   Treatment for mice and rats are similar and can vary from snap traps, live traps, bait stations, tracking powders, and lumitrack bait.  We primarily use snap traps and secured bait stations with rodent bait.  We may also recommend some environmental changes since exclusion is a large part of eliminating rodents from your home or business as they can fit through areas as small as the size of a quarter.  

Moles  (Talpidae)

(We do not treat for moles)

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House Mouse

(Mus musculus)

Deer Mouse

(Peromyscus maniculatus)