on an autonomous version created for a science fair project created by Lucas Garrow in 2004 (Garrow was a finalist in the 2004 The Discovery Channel Young Scientist Challenge (DCYSC)). Looj is not an autonomous robot, but rather a remote-controlled robot patterned after a toy tank with an auger mounted on the front. The robot fits inside most gutters to clean out debris stuck inside them, such as leaves and pine needles. It has long treads on its side which allow it to move inside the gutter. The auger dislodges and removes almost all of the debris inside the gutter by flinging it sideways into the air. Looj also has a detachable handle/remote that is used to carry and operate the robot. It was discontinued in 2017, but as of 2020 parts, supplies, and entire robot kits are still available on the aftermarket on sites like eBay. Mirra Mirra was a swimming-pool cleaning robot, the successor of Verro. Mirra cleaned a pool's floor and walls of large and small debris. It was discontinued in 2014. Military and policing robots In April 2016, iRobot sold off its Defense & Security unit, with a new company being formed called Endeavor Robotics. This unit became part of Teledyne FLIR in 2019. First Generation Robots Genghis (1991) was iRobot's first robot. It was designed as a test platform for researchers. The robot is currently at the Smithsonian Air and Space Museum Ariel (1996) is a crab-like robot designed to remove mines, both in and out of water. Urbie (1997) was a proof of concept robot designed for urban environments. The platform was designed with two tank-like tracks so it could climb stairs. Urbie was field tested at Fort Benning, Georgia, United States; one model was gifted to a local high school on indefinite loan in 2005. High school students at Columbus High School in Columbus, GA, reconditioned the robot and created a usage manual for future students to continue to benefit from Urbie's list of talents. Urbie is built around a light, machined aluminum chassis. The exterior consists of flat aluminum plates, bent at the front and back, which are attached to the chassis with small hex screws. 2 dc motors power the forward rotating arms, while 2 slightly larger dc motors power the body length treads. From the outside, Urbie is an exact replica of the PackBot Scout. The front compartment holds 2