I use alot of batiks and they are really bad for bleeding , they bleed and bleed. The darker the color the worse it seems.
Color catchers will in the wash work once the excess dye is released into the water. If you machine wash a quilt that has not been treated and there is a bleeder ... and you leave the quilt after the cycles are completed , moisture can still have the colors migrate.
I strongley urge you to get to the bleeders before you make a quilt. I let the batiks sit in water for at least an hour to test for bleeding , as some still have a good deal of resist remaining. It can be surprising .. leave it for 15 minutes and you may be tempted to think ... no problem.... come back in a hour and swish it around ... and you wonder if there is any color left in the fabric.
All the manufactures have this issue in the various batik lines, there is not a one that I can say has solved the problem.
Do use Retayne. It only requires a teaspoon per yard. It is SOOO worth it.
It always makes me wonder ... if we can put a man on the moon .... why can't we make fabrics that do not run?!!! And if there is a process that can prevent it ... why can that not be on the bolt so we know we can purchase with confidence?!!! Sorry I just get carried away on this topic.