Dog treats in a beer can! Calvin's Craft makes the most eco-friendly dog treats on the planet. Our main ingredient is recycled spent grain (barley, rye, oat, etc.) sourced from local craft breweries. We package our treats in recyclable aluminum cans because they're more sustainable than plastic pouches and won't end up in a landfill. We consulted with veterinarians to develop these nutritious dog treats. Our clean-label treats use only a handful of simple ingredients and don't contain any artificial fillers or preservatives. Best of all, dogs LOVE our crunchy treats. We are animal lovers at heart and that's why we donate 15% to animal rescue groups all over the country.