PrettyLitter Coupon: Get 20% Off Your First Order! Posted by Hello Subscription on July 14, 2018. Subscription Box Coupons & Deals / PrettyLitter Coupons Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification PrettyLitter has a pawsome deal! For a limited time get 20% on your first order with code LOVE20 Check out our PrettyLitter reviews to find out why our reviewer raves about it! Are you getting PrettyLitter?