I keep my bathroom extremely clean. It's a full bath, regular size with bathtub. I clean everyday and I am the only user. However, about a month ago until now, I smell urine from the toilet area, every time I enter the bathroom. Each time I use, I clean with Clorox again, and the next time I enter it, I smell urine again. There is no sign of water or leak around the toilet anywhere. What could it be ? Thanks

Do you have a pet? That could be a possibility. If not, I think it has gotten into the floor, wood and other materials are very absorbent. Actually when you clean a lot it never gets a chance to dry out completely so try using an absorbant like powder or cat litter and sweep up and renew often to draw that moisture up.
Many cleaners are simply masking odors. My father-in-law in a veterinarian and people often ask him how to get skunk odor off a dog. No, it's not tomato juice, it's a douche available in the woman's section of the pharmarcy. This product attacks the baterial agents that create the odor.
Also, although I have never used this, I have heard that a bowl of vinegar will absolve odors in the air. Again, change often. Good luck.

To track down smells and weird noises you almost have to be there to do it.
Have you taken the lid offand sniffed the tanks water? Where is the smell the
Worst? The bowl? The base? From a drain? We can point you but you're going to be the one that has to track it down. Regards, Tom