Here's how to use Promo Codes when shopping at Boonedox: Sign in to your boonedoxusa.com account, if you don't already have one, you will need to create a new Boonedox account. Then, add the selected items to the shopping cart. Then check out, click order, select the eligible Coupon Codes, and finally complete the payment. Plus, here's boonedoxusa.com's latest sale on October: Walmart Flash Sale: Up To 35% Off Boonedox Items.