While most concrete stains can be removed, using a concrete sealer or wax coating can protect concrete from developing stains in the first place. Concrete sealers penetrate the surface to help prevent oils and greases from staining. Several types are available, including acrylic, urethane, epoxy and silicate sealers. While sealers prevent spills from entering the concrete’s absorbent pores, making cleaning much easier, you still need to clean up spills as soon as possible to prevent permanent stains. For additional protection against dirt and stains on concrete flooring, applying commercial-grade floor wax on top of the sealer is recommended. This layer helps preserve the sealer from daily wear and tear and is easier to buff out minor scratches and signs of wear.