Costco Wholesale Corp. - 15300 W GRANGE AVE [Cleaner / Kitchen Staff / Dishwasher] As a Sanitation Assistant Clerk with Costco, you will: Clean and sanitize the department, equipment, and utensils; Re-stock supplies, inventory and ingredients; Identify equipment that requires maintenance. Costco offers great jobs, great pay, great benefits and a great place to work and believes future executive officers start out by working as a Sanitation Assistant Clerk...Be Valued >>