Product review (5 stars): easy. I will say you have to address stains ...
I'm addicted! I have a full size washer and dryer but, for reasons I can't explain, am addicted to using the Wonder Wash.

I find that it leaks a little so I just use it in my bathtub. Sit on the edge and slowly turn, easy.

I will say you have to address stains and ring around the collar prior to washing, as this isn't going to miraculous "scrub" for you, like those issues need. And large items like big body towels and sheets are still best cleaned in a machine but, otherwise, clothes get really clean. Purchased for my travel trailer, perfect.