LAST DAY: Pet Treater Coupon: Half Off First Dog Box or Cat Pack! Posted by Hello Subscription on October 31, 2017. Subscription Box Coupons & Deals / Pet Treater Cat Pack Coupons / Pet Treater Coupons Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification LAST DAY: new Pet Treater subscribers can use code PTSPOOKY at checkout to get 50% off your first Dog Box or Cat Pack! See our reviews of this dog subscription box to find out more about Pet Treater! Also check out the NEW Cat Pack!