I bought a white couch and chaise 6-7 months ago. I love them, but I am obsessively cleaning them. They have already lost their white brilliance. Should I buy covers for them or does any one have advice on how to keep them clean? I do not let any one near with shoes or dirty clothes. I keep a blanket over the bottom part of the chaise. Nothing helps. I think it would be easier to cover them. Any recommendations on where to buy a cover for a chaise? Will send photo if needed.