@Scott W , @Mama Fen So this morning willie calls me and says the pet treatment is acting weird and its turning the pet stains bright yellow! So I drive over to the job site and sure enough its turning them dark yellow. So I have seen this before but its been a long time since ive seen this happen. Scott when you look at the carpet there are some pee looking stains and some that don't even show up to the naked eye but when you spray the Pet force or enzall or even get them wet , they immediately turn dark yellow and it doesn't go away and you cannot rinse them out or clean them out. In my opinion no one I have ever asked has seen this but I believe its the prescription drugs that the old dog has taken... Do you think this as well because It was an old dog that lived there that has since died and it had been taking a lot of drugs because of health reasons.. I recommended replacement and we immediately rinsed off all equipment we took inside that house... Scott , tom, mama - is that stuff toxic to humans? could we have blown it up in the air because of the heat from the Truckmount? Im waiting to see the responses from everyone... I have no pics but when I pulled back the carpet it was completely peed up on the backing..