You can tell that some really LARGE Hugh Jass loads have been dried in it by the toasty stains left on the back of the drum where things might have packed the drum as they dried and forced some unfortunate items against the heat inlet part of the drum. Soft Scrub or a regular cleanser with light scrubbing pressure will remove the stains. Don't get the cloth too wet because then the cleanser will run out through the holes to an area where you can't rinse it without removing the drum and it would smell funny when heated. Of course, at its age, it probably should be taken apart and reconditioned anyway. This is one of the models shown in the pictures that nice young artist from the cold north shared with us a while back.