Rats and mice are the foremost common rodents librarians are likely to encounter. Rats are difficult to regulate because they're capable of gnawing through clinker block, lead and aluminum sheeting, wood, plastic, and sheetrock. The foremost common rats are the brown rat and therefore the roof rat or black rat .
Rodents like rats and mice are troublesome pests of stored food. Rodents can che w through wood and other materials to urge to food sources. they're good climbers and may squeeze through small openings. Rats and mice populations can rapidly build and consume or contaminate large quantities of stored food. They contaminate stored products and storage facilities with their urine, feces and hair. They also damage cloth, plastic and paper bags or cardboard boxes wont to package stored products. Rodents within a storage facility can also chew on electrical wiring and cause serious f ire hazards or equipment malfunction.