You can set them in a box also. A few guys do well here with them on mink.

Been whacking the heck out of the chipmunks with them I tell ya . Very strong trap would kill Godzilla if you could get his head in there .

http://korotraps.com/

Here is the maker

James runs wcs Canada , his dad makes the traps , his new wolf trap is getting some exposure lately as well

From the picture it looks like they took my advice on their beaver trap,,,lol,,,,,

I have and use both sizes. Very effective trap once you put the hardware cloth on the back. Of course the gutter size doesn't need the hardware cloth as long as it is used in a gutter. WCS carried them up until recently they disappeared from the online catalog. I called and they said they hoped to bring them back but were out of stock. I did order some from another company but can't remember which one at the moment.

Here is the company that I got my last ones from:
http://www.northerntrapping.com/cgi/display.cgi?item_num=kororodent

Useless without the "AFTER." (:

They have bug eyes Phil .

Weld a piece on the back, a cross bar for screwing down, and a dish on the pan to add weight to the trigger and a place to smear paste

Does the welding weeken the springs any . Or doesn't the heat reach them . I like the mod job nice

I have not noticed any issues with the springs and I have been using the same pile of traps for almost 7 years. They work great! In the winter, put a dab of vaseline on the rod that inserts into the pan. Keep it from freezing on ya...

Aha thanks good tip

I like it as well. No way there would be enough heat transfer thru that little rod to weaken the springs. All it would really need is tack welding anyway. I will be doing this with mine. Thanks for the tip Nic!