They work great! for hogs
I use these specifically for ground hogs here in the midwest, but it can be used for many other critters too. they work great! for hogs, just set it over the hole, and check daily. be patient. sometimes they stay underground for long periods of time, and also remember there is usually more than one hole. it's a 99 percent clean kill, for those interested. i've only had one, out of the dozens, somehow got trapped on his rear legs, and was still alive when i found him. i recommend getting the set tool and safety as well. the set tool makes life easier, and the safety ensures there are no broken hands or fingers when handling. these things will get rusty over time, mostly surface rust, so i'll just clean it with a little wd40 or something comparable, and lubricate the pivot points. check youtube for good videos on how to set these things. if you use it correctly, you won't be disappointed. they'll last a long time. good luck!