Window Walking Robotic Bugs

Amusing and entertaining critters, these robotic bugs defy gravity as they ascend a vertical incline. When they hit a barrier, they remain undaunted. They simply reverse themselves and travel in the opposite direction. The bugs will take to any clean, dry surface (e.g., glass)traversing horizontally, vertically or diagonally. ("Honey, would you like me to clean a few windows for you?")