The Minnesota Trapline Beaver Castor Trapping Lure is ground and preserved. One of the oldest animal attractors known to man. Attractive to all furbearers. This heavy paste is second to none. It is used to create a lure, straight at a castor mound set, or smear on a post for a post set. Very versatile. The castors are dried and then turned into a paste using glycerine. FeaturesGround and preservedVersatile attractant