This is my second or third time purchasing these to deep clean cloth diapers. Sometimes I’ve had to do two cycles, but after reading the cloth diapering guide from another cloth diaper site, I think the secret is a pre soak and spin to start a new regular cycle with clean-ish water, hot water, choosing the size of the load to create neither a “soup” nor a “stew” (for an adequate amount of friction but not so many diapers they can’t move against one another) and a second rinse cycle to remove any residual soap. And I love sunning if I can, even if there aren’t any stains, and especially for synthetic diapers which tend to hold onto stink.
I love that now it comes bigger size! I've got big front load washing machine, so i wash all 40 or so diapers at once. When they're clean I add 3 packs (not 1 or 2 like in the instruction). It works great but you do want use as much water as possible (Heavy Soil).
I use it for our towels as well!