Waterless urinals are becoming more and more popular as the green building movement continues to grow. Most waterfree urinals use some form of oil based sealing liquid that is lower density than urine. This causes the urine to sink through the sealing liquid, where it collects in the waste pipe. Air bubbles will rise through the liquid, leaving the urine in a low oxygen environment that inhibits the growth of odor causing bacteria.
Below you will find an overview of the different types of waterless urinals.