Retayne's MSDA is about as bland as any I've read, and I've read A LOT! I worked on a Safety team, and on a Fire Team. Retayne is non-toxic and does not call for any personal protective equipment. Firefighters should wear breathing protection if they respond to a fire where large amounts of retayne are involved, such as the factory or a store where retayne may have mixed with other products. Retayne is non-toxic to the environment (may be run down the drain). Did you know that milk is environmentally toxic?