I refuse to donate anything dirty, smokey, stained. I just don't know how anyone can be so rude. We put a mattress set on the curb but wrapped it in the plastic our new mattress came in. We were very careful and sealed it. I have had mattress pads on my mattresses for at least 45 years and always water proof. I learned when my mother's water broke prior to her giving birth to my youngest sister. Stained her mattress and had to get a new one. Nothing is donated dirty.