You can use a 220 on land in Illinois, and this is the only place I will use them for beaver. The location has to be just right for me to use them, usually at the top of a bank where they have worn a groove from repeated use. I find these that are just the right size for a 220. I take the trigger all the way to the side and bend up the inside trigger wire till it is horizontal with the top jaw and wire it off good to the side of the trail about three or four feet if possible. When a catch is made it will expire straight down from where it is anchored and keep them out of the way for the others to use the trail.