We just switched our 8 month old siamese from grain free kibble / canned to Stella & Chewy's Raw freeze dried. It's been WONDERFUL. I had run out of his kibble, so I started right away with no gradual transition. He loved the chicken one (only one I've bought so far) and took to it right away. I do not rehydrate, but he drinks plenty of water throughout the day. He has pooped once in the first 3 days and the smell was barely noticeable. This was a huge improvement from his pooping twice a day with strong odor. We feed him twice a day and he loves it, has been more active and seems more content. He also looks less bloated maybe, because I doubt he's actually lost body fat this quickly but looks slimmer around the belly. This food is not cheap but it's really night and day with the results and worth every penny. I was skeptical whether changing diet would actually resolve the odor issue, but it has been immediate and we get to enjoy the cat more without stressing when he poops. I recommend getting your cat on to raw only... and the freeze dried is so convenient.