These are a pack of 4 mouse traps. And there much easier to set then the older styled ones. With these all you need to do is place cheese or peanut butter inside a small hole in the trap and then once mouse trys to eat the cheese or peanut butter trap snaps shut to kill mouse. These traps only need to have top bar pushed backwards and down until they lock once locked there all set to go. Very easy to set and use.
https://www.amazon.com/LuvisR-Mouse-Trap-Catcher-Device/dp/B07CPV83YJ