Navigating via built-in sensors, this Robotic Diary Barn Floor Cleaner-called the Discovery Collector-removes manure from solid floors, not just scraping it to the side. The machine first sprays water (from two bags in its collection tank) to thin the manure, which is then sucked up into the tank via vacuum pump. As the tank fills, the volume in the water bag decreases, creating more space for the manure. When full, the collected manure is released above a designated dumping location. (The manufacturer also makes a robotic cleaner for slatted-floors.)