I need something really strong to clean the back seat. I let my dog ride in the back to take him to the vet, it was a nice day out so I wanted to bring the G out anyway. Well I let him go to the bathroom right before I left so we would have no "accidents in the car. well apparently he got some dirt on his feet. I had tracked it all over my back seat, I have tired Luxor leather cleaner. Meguiars gold cleaner/conditioner, and that cheap but good stuff @ murrays, (in the cream bottle forgot what it is called.) but it is STILL THERE!! Help what can I do besides ordering another back seat?