Vincent, my newest rattie that I got 2 months ago. His poops STINK. I mean literally could knock the wind out of you. It smells almost if not worse than a large human dump. I have absolutely no idea what causes it either. He usually just eats oxbow. I was thinking before maybe he was adjusting to the new diet since the previous owner never told me what he was eating and didn't give me any of his old food. But it shouldn't be this bad after 2 months now right? He himself doesn't smell bad, he smells like artificial grape for whatever reason. His cage is just ugh, the poop is really disgusting. They're large too which makes it slightly worse.