How Exterminators Get Rid of Rats?

There are numerous species of rats located within the United States, however this short article will certainly focus upon those rats that most frequently create pest problems in residences and businesses. These rats are the Norway rat (Rattus norvegicus) and the Roof rat (Rattus rattus). Additionally, two various other rats, the Rice Rat (Oryzomys palustris) and the Cotton Rat (Sigmodon hispidus) will not be specified in this post, yet are mentioned since they are identified by the Centers for Disease Control and Prevention as hosts of hantavirus and for that reason noteworthy from a public health point of view. Read about Houston rat removal near me.


Norway Rats are regularly called brown or sewer rats. The ears and tail of the Norway rat are hairless and the tail is much shorter than the length of the rat’s body.

Roof Rats are frequently called black rats and are smaller than Norway rats. Grownups vary in weight from about 5-10 ounces. Their tails are longer than the remainder of their body and are consistently dark tinted. The underside of the roof rat’s body is grayish to white. The muzzle of the roof rat is sharp and the total appearance of the roof rat is far more structured and streamlined looking than a Norway rat.


Roof rats are proficient climbers and not surprisingly are apt to build their nests in areas above ground. These rats are primarily energetic at evening. Both roof rats and Norway rats have a well-developed sense of scent and are wary of new points that are presented into their home range.

When a Norway rat population grows so huge that competition from various other rats for food, water and harborage increases, some members of the rat community might seek to find brand-new areas to colonize during the daytime. Norway rats can climb, yet not as well as roof rats, and are solid swimmers.


Roof rats are omnivores and will certainly feed upon lots of types of plant life such as fruits, grains, seeds and grocery produce. Also, roof rats are most likely to consume bugs. Similar to Norway rats, roof rats ruin much more foodsstuffs by contamination from feces and urine than from consumption.

Norway rats are also omnivores and will certainly consume almost anything that is discovered near where people discard food. Likewise, Norway rats may prey upon fish, fowl, mice, birds, small reptiles and amphibians. They might consume plant life, but prefer meat or meat-related wastes.


As mentioned above, roof rats choose aboveground nesting places in hedges, trees, and thick greenery. Roof rats getting in homes are normally discovered in elevated or secure enclosures such as walls, closets, attics, and false ceilings. Roof rats are most likely found in coastal, near-coastal areas and port cities.

The favored habitat of Norway rats is practically anywhere people live. A few of their habitats include garbage dumps, sewage systems and fields. In the majority of our urban areas, Norway rats might be seen scooting around after dark looking for food in garbage cans and other places where human refuse is found. Their tunneling habitats consist of dirt along building foundations, under woodpiles and various other stacks of debris. Should Norway rats infest a structure, they most likely will stay in the basement or ground floor.


Roof rats are polygamous and group themselves right into colonies of multiple males and females. Mating may happen all year in places where the ecological conditions are sufficient. Adult females are able to reproduce at 3-5 months old, can produce as much as 5 litters each year with about 5-8 young in each litter. Adult roof rats typically live about one year.

Norway rats are likewise polygamous and form colonies of many males and females. Breeding normally peaks in the warmer months of the year, but may occur all year in some locations. Female adults will certainly create about seven litters each year and will certainly mate once again about 18 hours after giving birth to her litter of about 8 pups. The reproductive potential of one female Norway rat about 50-60 young per year.

Indications of an Infestation

  • Observation– Rats are not usually seen during the day unless disturbed from their protective harborage or as a result of intolerable competition from various other rats. If rats are seen during the day that normally indicates a very large rodent populace nearby.
  • Burrows Or Nests– Holes in the ground around structures, plus nests in attics or trees are evidence of a rat problem.
  • Sounds– Noises created by scampering rats, damages in the wall surfaces or other noises from nest building may tip off the property owner to a rat problem.
  • Gnaw Marks– Rat need to eat and chomp on wood, plastic and various other tough surfaces in order to keep their teeth sculpted down.
  • Rub Marks– As rats relocate from one place to another, they stay near vertical surfaces in their environment that they make use of to assist in their nightly navigation. As a result, the body oils on a rat’s hair gets deposited on corners and edges of walls and around openings and voids they use to enter into a wall void.
  • Droppings– Rats produce a great deal of feces and the visibility of their fecal droppings is a surefire method to detect an infestation. When droppings are seen, it is a good practice to remove those droppings and later examine to see whether new droppings were deposited. ALWAYS USE RESPIRATORY PROTECTION WHEN REMOVING RODENT DROPPINGS.

How Exterminators Treats for Rats

Norway rats and the roof rats are extremely different in their routines, habitats and behavior, so the first requirement of a rat treatment program is to properly determine the rat and establish a treatment plan that works for that species. One more vital treatment element is client education so the client understands the principles of the suggested control program.

  • Exclusion and sealing of sites higher than 1/2 inch (about the size of a penny) utilizing screens, flashing, door sweeps and various other products to keep rats from getting in a structure.
  • Exterior and interior sanitation to minimize readily available food and water that supports a rat population.
  • Keeping vegetation thinned out or removed from the perimeter of buildings.
  • Eliminating clutter and any type of debris that creates hiding areas rats can make use of as harborage sites.
  • Making use of catches and other mechanical ways to remove rats.

Rat control making use of chemical products involves baits developed to kill rats. In circumstances where rats are not controlled with conventional items, fumigation of transportation vehicles or rat ground burrows may in some cases be needed.

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