We are planning to do the floors in our new houses as acid washed concrete. I was worrying a little about the environmental aspects of the acid wash. (I’m much more sensitive to what we throw in the trash, down the drain, and on the ground here.) Then we found SoyCrete — an environmentally-sound alternative. We also talked to someone about doing it, and she said it’s really easy. We probably won’t even have to etch the concrete on the existing slab. Now we just have to pick a color.