It works very well on both flat sets and at dirtholes. You will find Cachottier (pronounced Caa-show-tea-ay) to be an excellent all around canine and predator lure. I know people that swear it is their #1 lure on fisher, cats and coon. Its my #1 coyote lure, thats for sure. Few lures provoke such a consistent digging response at the lure hole as Cachottier does.
I use it by pouring a small amount onto a cotton ball and sticking that down the hole. I use urine with it at sets- but I use urine at all my canine sets. Stef just sticks a small piece of corncob into bottle and tosses that in the hole. When he uses Cachottier, he doesn't use any urine, just the lure.