I did a restaurant last night for a friend ,he is buying this place.so he has it cleaned to help the fix-er up process.as i am cleaning it i overhear the owner say he has not cleaned it in over 5 years (the carpet) and it showed it was very you make me sick dirty.when i got to the traffic area by the kitchen and the bus tub storage area the carpet was like someone sprayed fukin rhino liner on it.the grease was so thick nothing i had would penetrate it.i sprayed hte heat to it BIG TIME and notta.i cannot recall ever trying to clean something like this.the closest was a PIC A Nut company in warren MI that had hi-lo tire tracks thru the showroom and it was like dirt rubber grease all mixed and the heat worked there.what would help this situation???