PrettyLitter Valentine’s Day Sale: Save 20%! Posted by Hello Subscription on February 2, 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 Valetine’s Day Deal! DEAL: For a limited time get 20% on your first order with code VDAY18. Check out our PrettyLitter reviews to find out why our reviewer raves about it! Are you getting PrettyLitter?