I use hundreds of yards of batiks every year.. and can tell you there is no guarantee no matter who the manufacture that they will not bleed. Sometimes the bleeding may not occur until the second wash , this happens if there is still a lot of resist remaining in the fabric , and the prewash was done with cold water. Do prewash your batiks with warm water . If its a small amount of fabric .I use the sink and warm water let is soak for about 10 minutes then agitate , rinse and rinse till the water runs to clear. The Hoffman 1895 or "watercolor" batiks are some of the biggest bleeders. You can pretreat using Retayne but the quilt must be washed in cold water or you remove the Retayne.