I am currently finishing up a contract to remodel an office space. The owner came to me today and asked about removing the glue-down carpet from the showroom area to prep the concrete for acid staining. I am leery of this (I know that the glue HAS to come off, concrete may have residue from carpet cleaning that will effect the final look of the floor, etc.) but would like the extra work. If it was you, what would your approach be to make sure the glue is gone and concrete is CLEAN? I am planning on a floor scraper, have thought of using muriatic acid to clean it after scraping. Any other ideas?