Rats are strong, industrious animals that can make their way into wherever they feel they need to in order to get food or build a nest. They will leave behind dirt, waste, and grease near where they have chewed holes. They can chew through a wide range of materials including wood and concrete. They can even chew through wiring, which can pose a serious fire hazard that people may not know is there until a fire has started.
Their chewed holes can be difficult to find because of the unlikely and difficult to access areas in which they are located. These areas can be where wood or tile have rotted away, leaving a big enough space for them to get into. They also like cluttered areas and space around water pipes and the gas pipes behind the stove. It is important to plug these holes because they can also allow other pests to get in.
If rat holes have been seen or rats are suspected, it is necessary to identify possible points of entry and plug them up. Metal and concrete are the best materials to use to plug these points of entry. The best way to do this is to call a professional so that they can assist in creating an exclusion plan that is best for the given situation.