Just the other day I had some green that I washed in hot water and couple color catchers again along with a white terry cloth towel. Still came out with some color on it. Took it into my bathroom and hit it with my handheld til it ran clear. Threw it back in the washer on hot with color catcher and another white towel. Came clear. Threw everything in the dryer and still clear and dry. My washer has 2 rinse cycles and I use them. I don't buy as many batiks but I still prewash everything and happens to some of the other cottons as well.