A vet recommended this when I first adopted her at 8 months, and my vet here now wants her to stay on it until at least age 2. She loves it. She was getting half this and half another high priced brand at humane society where I adopted. But he suggested just this. She loves it, I love it, no smelly "doo" to pick up. And she is doing great on it. She was  badly malnourished when I got her. She was at her ideal weight for a Cairn Terrier Mix, by 3 weeks.