I bought these last week and returned them promptly. The packs do NOT dissolve completely. They leave a sticky residue on your clothes. And if you don't see it, and put the clothes in the dryer, it glues your clothes together. I had to soak clothes in HOT water to get the "glued" clothes to loosen up so I could re-was them. Check Amazon reviews on these. People are saying the same thing.
Bottom line: good soap, but bad packs that don't dissolve.
P.S. Yes, I have a front load washer, and yes, I put it in the tub with water before loading clothes. Still didn't help. Skip this product altogether.