Product review (4 stars): Defies logic! Get one!
I purchased a purewash after considering a few similar products mostly due to my larger family of 6 and that my kids are still relatively young. We do laundry close to every day and that amounts to a significant volume of pretreat, detergent, and softener products. A not so insignificant part of our household budget.

The purewash misses a five star rating because the wall wart had a corroded plug with a pin rusted into it and the plug on the unit itself had a bad solder joint. Both were easily fixed because I'm a tinkerer and would rather spend the few minutes diagnosing and repairing versus the whole RMA process.

The device itself is rather simple. When you pop the cover off to mount it you can see the guts. There is a flow sensor, venturi to pull is ozonated air, and aerator to make sure it's all mixed well before exiting the unit. While operating you can clearly see the UV led behind the PCO cell with a vent to the oxidizer that leads to the venturi. Pretty cool.

The first load I rewashed clean towels and while they seemed clean, after washing with the purewash they didn't smell. Compared to other towels I had they didn't smell like anything. Perhaps the cleanest towels I've ever had. I also noticed they seemd to be drier after going through the clothes dryer. Spot treating is still necessary for us with the little kids we have, but aside from that no detergent is necessary. As an experiment I left the power off while starting a fresh load with detergent. While off the suds floated on top of the water due to our really hard water. Once turned on the detergent immediately broke down into the water. Trippy.

When you are really close to the unit you can smell a little bit of ozone and the water will smell slightly of ozone while washing. It's not enough to be toxic but it's noticeable.

Anyways, highly recommended.