Brown rats are omnivorous and will eat almost anything. However, they prefer foods that are rich in starch or protein, such as cereals. They are very good at swimming and digging, so there isn’t much that will stop them foraging for food or burrowing to build a nest. These vermin can chew through many materials to access shelter or food. Rats are common household pests and can often be found nesting in attics, inside the walls, or in sewers and drains.
If you have bird feeders in your garden or leave bowls of pet food on your kitchen floor, this can attract rats. Any open bins or plastic rubbish bags which they can chew through are also a risk. The same goes for open water containers. Composting, food spillages, and loose materials they can use for nesting might attract rats. Brown rats are capable of breeding very quickly, producing up to 5 litters in a year. Each litter could consist of 7-14 new rats.