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.
Courses must be from a U.S. regionally accredited university or college. The Dental Hygiene Program will accept on a case by case basis general credit by examination in the areas of non-science courses such as sociology, psychology, humanities, social sciences and English.