Tim from Ohio shared his success with this beaver in a castor mound used using a 12x18x39 Comstock Beaver Cage Trap buried under a pile of leaves and mud. Credit must be given to Dan Gates in Colorado for coming up with this set. The set was designed to be used in open water where there are no channels, small streams or narrow spots to place a cage in standard blind sets. When there is shallow open water with basically nothing to work with, Dan simply placed the trap about even with the water level, then piled it with leaves first, then mud and topped it off with some castor. This simple yet ingenious set works on the principle that a beaver will just swim around and dive under until he satisfies his curiosity about the “intruder.” Before the beaver has done enough sniffing and looking, the beaver swims around and simply goes through the trap, as shown by Tim on his first shot at making this set.