Didn't Work For Me
I have a 9 Series Speed Queen. I set it to the delicates cycle, hot water, prewash, and extra rinse to give it a full chance.
The interior started off as black before the wash. After the wash, it was light gray and part of the plastic had came apart from the cloth.
I do have a German Shepherd, two cats, and 3 kids. If you have less dirty messes and if you have a front load washer, your results may be better. For me, it looks like I will be buying a new exterior filter and motor filter every time I buy bags.
It was worth the try though.