Combining the frequent use of peppermint oil with other daily routines and methods could help safeguard your home against any future rodent infestations. We've detailed some of the smaller elements you can implement to assure no rats ever enter your home again. Keep up with home maintenance Rats love small spaces and can crawl in from even the tiniest of cracks, holes, and crevices in your home. Keeping these areas checked over and repaired can help prevent rats from entering, and ensuring any doors or windows are securely tightened can also stop them from accidentally sneaking in.