My worst bleed was a couple weeks ago. I bought a dark green fabric that actually turned the inside of my washer and dryer green. I rewashed and it still bled. I used color catchers (3 of them) and white cotton terry towels to help absorb the color. So I did the unthinkable, I filled up the washer with warm water and bleach, It lightened some but still bled. Am so glad I choose to pre-wash. I used Chlorox Kitchen Clean-up to wipe out my dryer. Had to borrow the hubs knee pads. That fabric is still a dark green. Needless to say it will go against other darks.