Well i've been trappin beavers for about 4 years now in saskatchewan. I have a real problem sometimes with my dam sets. What i usally do is find the slide on the dam and open the top of the dam up wide enuff for good water flow and a 330 connibear. Now sometimes i put the trap at the top of the slide, sometimes at the bottom and sometimes i do both. But about 1 in every 20 beavers just plugs up sticks and mud against the trap to plug the hole and never swims or slides into it. A few times they plugged it up so bad i couldn't even see my trap. Now does this happen to u guys? and how do i catch these smart ones?