As a rule, food and call lures are the mainstay on the coyote line. However, now and then an old dog will get snooty on you (no respect). Gray Dog is designed to work on these trouble coyotes. Make your set and leave it alone. The lure will last for weeks at the set. Gray Dog will create the desire for the coyote to remain and work the set. Thick and powerful. Spiked with a little known ingredient that coyotes love.