why some water-saving campaigns encourage people not to flush automatically after every urination.
## Is It Hygienic to Leave Urine in the Toilet?
Usually, for a short period in a private household, leaving urine in the bowl is not inherently dangerous.
Fresh urine from a healthy person is mostly water along with urea, salts, and other waste products.
However, after sitting for a while, bacteria can begin breaking down urea and producing ammonia-like odors.
That means the main practical problems are usually:
* Smell
* Staining
* Mineral buildup
* Appearance
Regular cleaning is still
