I have mine all folded on shelves. I only have one room with direct sunlight and I keep a curtain over it so it's filtered. The only problem that I just discovered is that the bottom shelf is very dusty, not from the dust but from where my dogs come in to see me or let them out. The rest of the shelves are fine. I thinking about using a clear thru shower curtain or just yardage of fabric to cover it (after washing). I like being able to see what I have so that's why I had to get it out of the bins. I was amazed at what I have. The very minimum is that I'll put plastic over the bottom shelf.