As Mylar is highly synthetic, the majority of waste management companies are unable to do anything with it. Unlike papers, glass, and many plastics, it cannot be mixed in with curbside recyclables. It is possible to contact your local waste management to find out if they do have a Mylar recycling program, or even environmentally friendly suggestions for reusing this unique material.
Just because Mylar balloons are not generally picked up on the curb, does not mean there are not progressive programs that may have a use for them. For example, SCRAP (Scroungers Center for Reusable Art Parts) does accept clean, used Mylar balloons. This San Francisco, California based organization has found a way to help the environment, and support the arts by collecting and distributing scrap materials to artists, community groups, and local arts education. From buttons to shiny Mylar, creative kids and adults can find endless ways to make constructive, even inspiring use of materials. Contact SCRAP to see about sending in old balloons, or even your local school or arts program to see if they have any use for metallic, decorative, used balloons.