What are you guys using that seems to work on this stuff i can get it okay but I am never satisfied with it, you know the customer you have that has that dog that stinks and comes in and always lays on the carpet behind the couch , with grease marks from him rubbing against the wall , I have been running into these lately and they stink, and cant quite get all of the stains out , yesterday i did one 14 year old golden retreiver and of course he had his spot in one of the bedrooms. Presprayed, dwell time , rx-20, then used some fire water, and citrus, a little better but not to my standards. Customer extremly happy as always but still bugs me, all day thinking about it.