Mouse deterrent has a nice sound to it. The thought of avoiding constantly going to war against these little creatures with traps, poisons, adhesive strips, or a rented cat, makes the idea of a deterrent a nice thought. Most of the time we wait until we find we have a mouse (or more) in the house, before taking any action at all. Some of us don’t mind killing the little guys, others of us insist on trapping them live and later releasing them (releasing them in the front yard won’t work).