Just dried DH's work trousers, didn't realise they were covered in tar stuff (bichumin?) which obviously didn't come off in the wash. The tumble dryer drum and door are now covered in what can only be described as tar skid-marks! If I use it i'm going to ruin whatever clothes I put in aren't I? Any ideas? Or do I need to get a new one? Current model is a bit crap and leaky to be fair (tumble dryer not DH). Well...