The answer to 'how to prevent rat' is to take proactive steps to make your home less attractive and accessible to rats. This includes sealing up entry points, eliminating food sources, and using effective deterrents. Regularly inspecting your home and taking prompt action can go a long way in preventing a rat infestation.
Start by identifying and sealing any cracks, holes, or gaps in your home's exterior that are larger than a quarter inch. Rats can squeeze through very small spaces, so be thorough in your inspection. Use caulk, steel wool, or other durable materials to close off potential entry points. Eliminate food sources by storing all food, including pet food, in airtight containers and promptly cleaning up any spills or crumbs. Consider using deterrents like ultrasonic devices or peppermint oil around your home's perimeter.