I have been in a couple of state park campgrounds laundry and seen people putting dirty things in the dryer to just dry them. Especially after a rain storm. throwing sandy, wet stuff in to dry out a bit and don't worry about cleaning the mess left. I have seen some pretty nasty stuff in washer (fish scale, gut and blood coated) and the washer wasn't cleaned afterwards.
I have also seen some dirty things at laundry near my house and had the heat from the dryer melt the backing on a bedspread. (granted it was a cheap one) First dry it was still wet... second was melting nylon. A half a day blown to wash and dry clothes and over $10 to wash bedspreads, blankets and rugs from RV. I went to laundry because the comforter wouldn't fit in mine and I swore off going again. I will wash either one item at a time or wait until I am visiting DD and can use her large family size front loader.