SitStay Coupon Codes Since 1995, SitStay has led the way in working dog supplies. In fact, we were one of the first internet retailers to ship high-quality pet products direct to your door. Over 20 years later we are still the trusted leader for everything your dog needs where they work, where they live and when they play. Modern-day working dogs are true American heroes. Brave, versatile, and highly skilled, they dedicate their lives to protect and serve us. From Service dogs that save lives, therapy dogs that provide comfort and all dogs in between.