Request your FREE Hartz Dog Treat Samples. Hartz Delectables Squeeze Up Treats are made from 100% real chicken, and are grain-free with no added fillers or by-products, no artificial colors, and no added preservatives. These rich purees come in three different flavors and are perfect for small and tiny dogs. Hartz Oinkies Tender Treats provide fun and tender chewing entertainment with the irresistible flavor of chicken your dog will crave. They’re perfect for senior dogs with sensitive teeth and smaller dogs with little mouths. If you want to get this freebie, click on the “Get FREE” button and fill out the form. US only.