Sardines may work for many things but I don't think Beaver would be one of them. If you want to try something a bit different, try a piece of Apple instead of the usual offering of a few twigs from a Poplar or Willow. For some good trapping advice, check the trapline community bulletin board at www.sullivansline.com . As on most sites, there are a few on there that may rub you the wrong way, but overall if you enjoy trapping it is a good site.