After finishing them, I mashine washed them in cold water and machine dryed them. Good news! The treatment works. Check out the warp and the white and natural loops. There was no bleeding! Yea!
I'm thrilled. I much prefer the intense colors like these that I can get by using RIT dye on these loopers.
I'm sure the occasional polyester and acrylic threads in the nearly all cotton loopers causes the fiber reactive dye to not be as intense. RIT, on the other hand, doesn't seem to have a problem with those threads.
So, I have a solution to my dye bleeding issues. Finally!