I am using my wonderwash right now. I got it for $10 at goodwill, and it works extremely well. My clothes get super clean with a minimal amount of water and detergent. Since i use so little detergent, I only need one rinse cycle.
And then i add the used water to my fruit trees.
Just now i filled up the Wonderwash to the inside fill line with clothes and water, and a tablespoon of detergent. I agitated inside the bucket with my hand a few times, and then let the whole thing sit for a half an hour.
I about going to head back outside and do my agitation cycle.
I love this thing.