Welcome aboard.
I use 6"x6"x24" colony traps for muskrat that I make myself.
For mink I use Tomahawk 7"x7"x24"
Raccoon I use 10"x12"x32 Tomahawk traps too.
You can buy them on line at:
www.livetrap.comThey also have bobcat cage traps too.
As for swim through beaver traps talk with Bruce, he makes a good style that works great.
JC.
