Removes newer mastics, layered adhesives and even glues 50+ years old, using the power of soybeans. It's the first product to pass both performance and environmental safety tests by the USPS for the removal of mastic containing asbestos! Contractors find that 500MR works more efficiently, saves time, and helps create a safer restoration site compared to traditional hazardous chemical mastic removers. GHS Compliant. Biodegradable. Virtually no odor. Less than 3% VOC