excuse me..."cedar" enzyme bath. the place is called Osmosis in Freestone, CA (near Sebastopol): http://www.osmosis.com/cedar-enzyme-bath/

I have personally done this treatment; it's not new. There's a place up in near wine country here in Northern California; they called it a "wood enzyme bath". Aside from all the purported health benefits, it feels pretty awesome. Probably best if you're not claustrophobic, because it definitely has some weight and heat. In fact...the further down you push your feet, the hotter it gets. The feeling is fairly similar to a hot tub, but with more weight and viscosity of course. And invigorating once you jump out and get hosed down.