I'm replacing our shop vinyl floor and need to remove the left behind adhesive. I've tried scraping it with a putty knife and adhesive remover. Neither were very effective and very time consuming. I've got about 3,000sq ft. so I need something quick and effective. Is there an easier way to remove this adhesive. I'm going to be putting down a moisture sealant so the surface needs to be as clean as possible. Is there a machine that I can rent or something? Anyone have any suggestions? Thanks in advance.