One time when were removing beaver dams with gel, a fellow who was trapping the varmits came by with a couple of the rodents in his truck. Well it was decided that we should sacrifice said rodents to the stream gods. We loaded up the dam with gel and placed the critters on top. After retreating to a safe distance we sparked the fuse. Well, we dun blowed 'em up good. Beavers look somehow out of place about 150 feet in the air. I think we learned 'em.