Simple ways to control the entry of wild rats include sealing holes, employing proper sanitation, plugging gaps in floors and walls, and sealing openings with foam insulation. Homeowners can use less humane methods such as maze-type traps, glue boards, poisons and snap traps to trap or kill the rats.
Ensuring proper sanitation in a home is the most cost-effective way of controlling the infestation of rats. Identify any burrows and openings around a home that could mean the presence of rats. Before using less humane methods, seal all the openings and gaps, get rid of any rubbish near the building, dispose of garbage properly and clean the home daily.