Purina One +Plus Urinary Tract Health Formula Dry Cat Food Introduce your cat to Purina ONE +Plus Urinary Tract Health Formula adult dry cat food for a taste she is sure to love. This high protein cat food kibble reduces urinary pH and provides low magnesium and the real chicken Purina cat food recipe offers delicious flavor. The premium adult cat food contains 0 percent fillers in an easily digestible cat dry food SmartBlend and this urinary tract health dry cat food provides 100 percent complete and balanced nutrition for adult cats including added vitamins minerals and nutrients to promote good health.