I use a color catcher in every color or mixed load of my everyday laundry. I've never had one to be white after use. The catchers stop the dingy look. I haven't had but a couple of quilt fabrics bleed over the years and that was my fault for not testing it first. I test the darker colors by steam pressing a sample on a piece of white muslin before cutting. If color shows on the white then I don't use it. I don't waste water, power, products and my time trying to save it.