Waterless. Unlike other home urinals, No-Water Urinals do not have flush valves and require only a hook-up to discharge waste down sewer pipes, similar to a toilet. The maker’s EcoTrap system helps ensure that sewer gases and other odors are not released into the bathroom. The no-water system helps reduce costs, and the home urinal models are smaller than those found in commercial buildings, making them more practical for midprice homes. 800.244.6364. www.waterless.com.