Asa lenon tested it both in formulation and alone and found it in his test and opinion to be very poor and is not a bit bashful in mentioing it as a general rule, orgorman claimed it had value as a lure or bait ingredient, boddicker thought very highly of it as a lure and tested it a great deal, russ carmen refused to use it as he considered it a possible liability not to mention thought the make up of it caused sinus problems and possibly even worse under constant exposure, when all the test were said and done it came to light that much of the performance was based on canines visiting the odor, but not as much was factored in on how much continued interest the animal had at a real trap set such as a dirthole as opposed to a scent block or plastic scent holder,sterling fur sells it in his line as well as others, i tried it one winter and considered it to be about as effective as supply house urine at scent post or dirtholes, chas dobbins used it in his trapping it seems mostly as a mixture in his long distance calls soaked into paper towels in a large soda pop bottle wired up in a tree, skunk musk and rotted fish juice was also in the mixture as i recall and he considered this mixture to be plenty strong and interesting enough to bring fox and coyotes for as far as a mile in the right conditions, i tried the same mixture and never achieved his results of a mile but figured i was sure getting 500 yards out of it when fresh.