To all of you out there who have demons (cats) who spray in the house. My vet suggested a product called Feliway. It is a spray that has cat pheromones in it. It doesn't smell like cat urine, but it tricks the cats into thinking they have already marked the area. You clean the area that your pet has sprayed, then spray the Feliway in the area, and continue to spray everyday until the behavior stops. I went through about 1 1/2 bottles before we got the little creatures under control. Occasionally, they start up again and I just repeat the procedure. Feliway was expensive when purchased from the vet (39.95 for 60ml), but I found it online for 19.95...Yeah! Here is the number 1-800-360-4838.

Good luck!