Stockton Springs. Barkwheats are all-natural, handcrafted buckwheat dog biscuits made from nearly 100% locally-sourced ingredients. They come in two flavors: Ginger & Parsley and SeaVeg & Chamomile. The packaging is 100% recycled and completely compostable. 207-449-1214. Email: mainedog@barkwheats.com