GAF United Cleaning Concentrate 5-Gallon Concentrated Cleaner Reflective Roof Coating (Warranty)Biodegradable: allows for proper cleaning of substrates where washing with hazardous cleaning products would not be permitted prior to (re)coating Open dry time: helps remove dirt, pollutants, and other contamination build up even if the product dries prior to rinsing Safer for the environment: will not harm plants even in its concentrated form Agency approvals: meets all the requirements of USDA and FDA standards, and is also OSHA compliant Features