Merrick Purrfect Bistro Complete Care Weight Control Recipe dry cat food was crafted specifically for adult cats that require weight management. This grain-free formula contains prebiotics and probiotics to help support digestion and the low-calorie diet helps support healthy weight, plus the L-Carnitine content helps support a healthy metabolism.; Merrick Purrfect Bistro Complete Care Weight Control Recipe dry cat food was crafted specifically for adult cats that require weight management. Real deboned chicken is always the first ingredient in this Merrick Purrfect Bistro cat food.