Yes brat you can mix them, they are batiks, don't know why the difference though. I wouldn't put them in the wash machine if they are FQ's, soak them in the sink or something. Or just note to traci that they have not been washed. I'm sure everyone is aware the with FQ's, F8's or strips, they can not be prewashed very easily. After your quilt is done you just need to use a couple of color catcher's in the wash the first time and all is good. I always do even on regular cotton ones just because. I'm not great at the prewashing though either.