Batiks are fine. A lot of people prewash batiks, but I don't unless I suspect a color might run. I *always* do my first wash of a quilt at the laundromat in a large washer (that uses lots of hot water) and with Synthrapol. This way any bleeds are sufficiently diluted (by the water) and any loose dye particles are kept suspended in the water (by the Synthrapol) so they do not settle into any other fabrics. I also am careful not to allow wet fabrics to lie against each other. I immediately move the quilt to the laundromat dryer.