Waterless Co.’s EcoTrap drain insert for waterless urinals helps no-water urinal systems work at optimal performance while keeping restrooms clean and odor-free. With the EcoTrap system, urine passes down the drain through a floating layer of BlueSeal. Together, the EcoTrap and BlueSeal form a barrier so sewer vapors and odors cannot harm indoor air quality. The long-lasting EcoTrap insert is easy to maintain and change.