Comstock Beaver Cage Traps at work.
The other day I checked 4 sets at this location, which produced a blanket beaver, a two year old and a muskrat. This catch is indicative of a double colony and reason to add traps. I put in one more trap, 5 total. On this check the result was 5 for 5, a blanket, two more two year olds and two yearlings. Three were caught in 12x12x36 and two others were caught in the 12x18x39. Beaver ranged in weight from 20 to 45+ pounds. In wide runs the 12×18 traps work great. A second alternative is to place two 12x12x36 cages side by side in wide runs. Beaver can easily be taken in cages set next to each other. If set with triggers to the outside, the first caught frequently does not spring the second trap.
Under ice setting is quick and easy, with the ice acting as a deadman and no camouflage required.