You might be able to take care of this yourself using the techniques mentioned, but the important thing is to make sure you’ve found the entry point so that is can be permanently sealed. I just had a roof rat removed from my attic by John with Adept Pest. He found that the rat had chewed through the screening on a roof vent. He installed a one way exit on the hole, then sealed all of the other vents with heavy-duty wire. However, clever Mr. Rat chewed a new hole in a very hidden location – which John quickly found and sealed. I’ve used John several times in the past and he is simply the BEST. John knows every trick, employs IPM methods, takes requests for humane removals without judgment, is great to work with, AND is very reasonably priced. He will not try to sell you unnecessary and toxic poisoning programs like so many pest companies do. Just a great guy. Give him a call, (sometimes you have to be persistent – he’s super busy).