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 Charter # 133




Rats will live for 6 to 12 months and are sexually mature at 2-3 months.

Female rats produce an average of 4-7 litters per year and 8-12 young per litter.

Rats are nocturnal as a mode of self defense, and usually become active after a premises have become quiet, or about one 1/2 hour after dusk. When left alone they will roam around day or night.

The roof rat is also a house rat and may live in trees, shrubs and in vines on the outside walls of houses.

The Norway rat is the most common rat and occurs practically everywhere.

Because of individual variations, rats often can't be separated by color.

Rats are color blind and have poor vision, but highly developed senses of smell, taste, hearing and touch.


Rats are omnivorous but do have preferences. They prefer seeds, fresh vegetables or fruits.

Norway rats prefer food high in fat content.

Rats will eat anything when they need to including clothing, leather, bone, lead, and plastic pipes, cement and wood.

Rats will eat their own injured or weak.


Rats prefer nesting areas out of sight and reach of enemies

Nests can be made up of any kinds of materials but they prefer bits of paper, rags, burlap, straw, chips or even currency.


Roof rats are agile climbers and can shinny the outside of 3 inch diameter pipes or any size pipe within three inches of a wall.

Rats are capable of climbing inside of vertical pipes that are 1 1/2 to 4 inches in diameter.

Norway rats can swim as far as 1/2 mile in open water, dive through water plumbing traps and travel in sewer lines, even against strong water currents.

Roof rats are capable swimmers, but only swim if necessary.

Rats have excellent balance and can easily scale brick or other rough walls, as well as travel along power lines and ropes.

Rats are excellent jumpers and are capable of jumping vertically 36 inches and horizontally 48 inches; they can drop from a height of 50 feet without serious injury

Since rats can fit through openings that are as small as 1/2 inch in diameter it is very difficult to rat proof a building.

Norway rats can burrow to a depth of 4 feet.


The roof rat was the common house rat in Europe during medieval times when outbreaks of the Plague, known as the Black Death, killed over 25,000,000 people.

They are known to be vectors of the following diseases:

  • Murine Typhus Fever
  • Weil's Disease
  • Food Poisoning
  • Antiviral Infections
  • Rat Bite Fever
  • Trichinosis


Presence of rodents reduces the rental value of apartments and stores.

The noises they make as they climb, gnaw, and fight between the walls and floors of buildings often keep inhabitants from sleeping.

Rats can damage food and property estimated at one billion dollars per year.

Rats can damage electrical wiring, causing short circuits and fires.


The control of rodents can be widely varied, depending on the individual situation. Covering holes, filling cracks, baiting or trapping may be necessary. One of our trained  Technicians will determine the best means of control for each customer.


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Last modified: 03/18/10