The Costco Gas Station hours are usually longer than the Costco Warehouse opening hours, so make sure that you are viewing the Costco Gas Station hours, and not the Store Hours, if you search through an app or with google maps.
All dental hygienists in the United States must be licensed by the state in which they practice, after completing a minimum of two years of school and passing a written board as well as a clinical board exam. State requirements vary by state, and are controlled by state dental boards.
Every state requires dental hygienists to be licensed; requirements vary by state. In most states, a degree from an accredited dental hygiene program and passing grades on written and clinical examinations is required for licensure. To maintain licensure, hygienists must complete continuing education requirements.