Rats and mice can be a problem in urban, suburban and rural areas. They infest old buildings and crowded, unsanitary areas that exist in an urban environment. However, they can also be a problem even where newer homes and sanitary conditions exist. Since these rodents eat practically anything humans eat, they get plenty of food from home gardens, fruit or nut trees and even parts of some ornamental shrubs and flowers.
Garbage disposals also attract rats into household and street sewer lines. Rats and mice have long been a problem on farms where food is plentiful and convenient nesting sites are both numerous and hard to eliminate