Pet Treater Coupon: Free Dog Bed With Subscription! Posted by Hello Subscription on January 24, 2018. Subscription Box Coupons & Deals / Pet Treater Coupons Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification For a limited time new Pet Treater subscribers can use code DOGBED at checkout to a free dog bed with your first box! Valid for a limited time only. See our reviews of this dog subscription box to find out more about Pet Treater!