Can’t I just trap the rat myself?
While no, it’s typically not that hard to catch a rat, a mouse or even a squirrel. Let’s say that you have successfully captured one of these rodents. Now all other signs of them being there are gone. Great, problem solved, right?
Are you sure? Are you confident enough to risk your biggest investment, or more importantly your family, on that presumption? In my experience, catching just one is the rare exception and nowhere near the rule.