Rat Infestation Michigan County


rat control and removalThe most commonly found rat pest found in Michigan is known as the Norway rat. A mature female rat can produce up to 20 young per year. Rats are social animals and prefer to live in colonies. Rats usually begin foraging just after dark. Most of their food gathering occurs between dusk and midnight. However, they day be seen anytime day or night. Rats give many signs that they are infesting an area. An inspection will determine the extent of an infestation, feeding sites, nesting, patterns of movement, and population size.


Outdoors, Norway rats usually nest in burrows dug into the ground. The burrows are shallow (less than 18 inches) and usually short (less than 3 feet), with a central nest. Extra “bolt holes” are used for emergency escapes. They are hidden under grass or boards or lightly plugged with dirt. Burrow openings are 2 to 4 inches in diameter. Indoors, Norway rats nest inside walls, in the space between floors and ceilings, underneath equipment, between and under pallets, and in crawl spaces, storage rooms, and any cluttered area that is normally unoccupied. Squeaks and fighting noises, clawing, and scrambling in walls, or gnawing sounds are indications of rat activity within homes and buildings.


  • Plague, Murine Typhus Fever, Rat-bite Fever, Salmonella, Leptopirosis, Trichinosis.


When a rat infestation has been identified the most effective method for removing them includes baiting and trapping depending on the circumstances. A wildlife management professional will be able to determine which methods to utilize that are most effective as well as the safest. Once it has been determined that the rat infestation has be resolved, repairs can be performed to prevent further entry. In order to prevent rats from returning, it is important to remove food and shelter areas. This may include regular disposal of pet droppings in yards, eliminating mulch piles, and wood piles.