Well at OKW no problems there but those are regular washers/dryers. I think it was the stackable ones and I figured out that clothes were getting hung up (hard to explain) kinda where the lining of the dryer and the seams meet. I pulled my dryer sheets off of that few times and there was rust all over them too. SO I am pretty sure that is where it came from. I never dry anything on high heat but towels. Then when we stayed at BWV last summer my dryer took forever to dry so I reported that too. I just don't like the stacked one. I tried to put less clothes in the dryer so they could move around more freely but still a couple of things would come out with those brown rusty looking marks. I have this night gown that I never got them out of.