When I dry heavy quilts and heavy mattress covers, I put clean tennis sneakers that have been washed in the washer and put them in the dryer with the quilts. The sneakers fluff the quilts and they dry quicker and look very puffy just like new.
I keep quilts in a close-lidded cedar chest, taking after my grandmother who did the same.
I have a friend who is a prize-winning quilter. She has told our group that she uses only Orvus. This can be obtained at most feed stores or online.