I have not washed many, but all the talk of possible seams opening up, etc. has made me think. I do want to get the chalk and cat hair out before I give a certain one away. I plan to use cool water and a very mild detergent, plus color catchers. I do not want anything to happen to this one. I may start doing this all the time though, as it sounds like a very good idea, to check the quilt before the person gets it.