This is my third attempt at finding a mouse trap that works. I tried the yellow see through plastic kind and while that worked for a few mice it stopped working (being able to be set). Plus to set it you had to touch the trap quite a bit. Then I tried the black Tomcat tilt back trap. I had 3 in a drawer. If you didn't shut the drawer just right they would tip back and close. Then after I caught mice they would chew through the plastic. I threw all of these away.  The Victor Tin Cat trap has been great! I put a piece of cereal bar in and that's it. Nothing to set. I have caught up to 3 mice at one time. To release you just open the lid. Some mice run out, some jump and some don't want to leave. I make sure I have some cereal bar in there and put it back. This is the best I have found so far!!!