Use Promo Codes to save $10 before placing an order at stericycle.com. Add your favorite items to the shopping cart, then click to log in or create a new account, then go back to the shopping cart interface of stericycle.com and select the items you want to buy. Then place an order, click the Coupon Codes obtained on the settlement page, you will automatically jump to the existing Coupon Codes page, select the Coupons you want to use, and complete the payment.