Each recycler may follow different practices, and you will need to decide which electronics recycler will do the job you need done, offer the services you require, and minimize your environmental and informational liability at an acceptable cost. Organizations should seek recyclers that are third-party certified to an accredited electronics recycler certification program. EPA encourages use of electronics recyclers certified to standards that require safe handling of used electronics and adherence to high environmental standards.
R2 and e-Stewards are the two electronic recycling standards. The EPA encourages you to find out if the recycler you are considering has been certified by an accredited, independent certification auditor to standards that require safe and environmentally protective handling of used electronics. You can view certified facilities across the world at http://www.r2solutions.org/certified/electronic-recyclers-with-r2-certified-facilities/