I used OxiClean on a thick blood stain, and threw it in the washing machine and then the dryer. The stain turned BLACK and was stiff on the fabric. Yuck. I then thought of this cleaner and saturated the stain with it. No rubbing or scrubbing, I just left the garment over night--actually, I forgot about it until morning. When I looked at it in the morning, the black was GONE!! Just a few small spots of blood remained, so I saturated it again. Within an hour, those remaining spots were almost completely gone. This stuff is magical!!!