Okay, here is what I did. I have an HE machine. I took a delicates washing bag (about 15 inches by 18 inches with a zipper). I put three color catchers in it laying them flat, side to side. Then I sewed 2 long lines leaving about 4 inches in the middle. When I am washing new fabric, I slip 2 new color catchers (one on each side of the three) and reuse this until the newest ones become dark. I can usually get 3-4 washes out and the catches don't wad up and become tiny little balls in the machine. And yes, the original ones are very dark but it doesn't hurt them and they keep the bag relatively flat when washing. I have just completed my 3rd batik quilt so you know I am getting some bleed but I have also found that if I wash in cold water and make sure those instructions are on the labels of the completed quilts, I have had no bleeding on the lighter/white borders. These fabrics have been from Batik Plus, Jo Anns, and Hobby Lobby!!!!