Is your piglet a male? I've had males and females and the males seem to have a much stronger odor. That meant I had to clean their cage more often just for my sake. Also make sure he's getting enough fresh water. Concentrated urine will smell stronger too.
It's a girl and she has a huge fresh water bottle. Hmm, I just thought something might be wrong. I have had her for 6 months now and never smelled it this strong. Thanks for your reply!
You're thinking maybe she has a bladder infection? That's a possibility. Or perhaps she has new cage bedding or a different food. It's hard when they can't tell us how they feel.