Consolideck PolishGuard water-based, VOC-compliant protective coating for concrete floors resists etching from spills of acidic liquids such as vinegar, milk, fruit juices, and softdrinks. The product keeps soils and contaminants from penetrating, making maintenance and cleaning faster, more effective, and economical. It helps polished concrete floors resist staining and etching from common food and household cleaning products. Prosoco.