This is a friendly reminder that CDHO no longer issues wallet certificates to RDHs. CDHO has encountered instances of illegal practice involving forged wallet certificates. The best way for RDHs, employers and the public to verify that an individual is registered with CDHO is to check Find a Registered Dental Hygienist. This provides the most up-to-date information, and users can subscribe to email notifications for changes to an RDH’s status.