I know my dryer has what looks like a brown buildup on the white drum. I've always thought it was from the heat of the coils(scorch)since they're located right behind. I don't do white dress shirts but I can imagine with the stiff collars, that it could rub off any stain in the drum. I don't know what type of cleaner would clean it but you have to be careful with a liquid with all the holes in the drum. Maybe those Mr Clean pads. You could see what's coming off with them being white. |