Your going to have to change the look of your dirt hole sets. Make the holes BIG, deep enough, and at a 60 degree angle, so they cannot see to the bottom of the hole. This will force them to come around to the front of the hole where the trap is to see whats in the bottom. If they see enough dirthole sets, they'll totally avoid them. Make some flat sets, and for this time of year when they are rutting, a good scent post set. Also, change your bait completely! If they keep smelling the same thing over and over again, they will loose interest. Don't get caught up in making all the same sets, and making them what the "book" says they should look like. Experiment with different things. Coyotes learn!!!! Believe me!!!!