Over 20 species of rodents are native to BC, and most of them are not pests. The problem rodents are three introduced species that came with the Europeans settling in North America.
These species include the house mouse, Norway rat (brown rat) and roof rat (black rat). These rodents spread wherever humans provide them food and shelter, however, most people do not come into conflict with them until the animals enter their house or outbuilding.
Remove invading rats and house mice immediately with rodent proofing methods. Established populations of these rodents are hard to eliminate, especially if they’ve taken up residence in barns and old houses. Rats and mice breed prolifically. Ignoring a small infestation can soon result in a much larger and more damaging one.