Ask Amigos Question – What is the proper way to dispose of old microcards?

Ask Amigos - the Librarian's Reference Desk, our free service to Amigos members that provides information, referral, and resources delivered by phone and e-mail, recently received this question:

What is the proper way to dispose of old microcards?

Preservation and Collections Care Specialist Carmen Cowick sent this informative response:
Do not dispose of this material with unsorted regular waste. Improper disposal may be harmful to the environment and human health. Please refer to your local waste authority for information on return and collection systems in your area. Some libraries also report using a service such as Safety-Kleen®: www.safety-kleen.com. This company works with businesses to make environmentally friendly options simple and easy.