I have a front loader that drains into a laundry tub. I wash like colors together and watch the color of the water as it is expelled. If something bled, I treat it with Retayne in a bucket per the instructions on the bottle. I had a top loader and the first time I used a color catcher in the front loader, it deposited all the color it caught onto a light pillow case that was in the load. I failed to read the instruction that said not to use them in a front loader. Oh, well. I also wash precuts in the kitchen sink and spin them in a salad spinner.
Retayne has worked 100% of the time for me, even on a dk blue that had shed die the first 3 times I washed it, however, I will say that most of the fabric I've washed has not bled, but almost all of it has shrunk. The shrinkage was selvedge to selvedge not along the length.