Here is a toilet set. I use this set often when the situation calls for it. It has to be right on location because there's not a lot of visual stand-out to it from a distance. The trail, road track, etc. is where the trowel is laying on the left picture. Dig the hole straight down on one end and rake the dirt upwards toward the other. The picture on the left shows a close-up of the materials needed. They are brush, rocks, etc. for backing, fresh cat urine, cat droppings, and a good gland lure. The one on the right shows the completed set without the trap covered yet. Notice that the dropping is on the slanted mound of dirt. This will help protect it when rain comes. The urine is squirted where the small white X is on the hole. I usually put the gland lure right on the dropping or very close. I use this set often at the entrance to cage traps. I don't put a trap in front of it, I just use it to entice the cat to enter the cage.