Walls that pee back!

• People in Germany came up with an idea in which they covered walls with super hydrophobic paint. So all the pee is splashed back over the person peeing.
• Originally developed by Nissan to keep cars clean from dirt, the water-repellent paint acts as a reflector.
• It costs about $700 to cover six square meters with urine-repelling paint.
• According to Ultra-Ever Dry, a paint manufacturer, an object coated with hydrophobic paint develops a surface chemistry and texture with patterns of geometric shapes that have “peaks” or “high points”. These repel water, some oils, wet concrete and other liquids.