We aim to use our super non-sticky surface coating, LESS, to reduce water consumption in toilets by ~90% while also greatly reducing the cleaning frequency. LESS is a sprayable, anti-fouling coating that outperforms commercial materials in repelling urine and feces, and can be applied onto typical toilet materials in minutes. With > ~1.4 billion toilets in the world, our technology will improve quality of life in many regions of the world.