iRobot Scooba 450 Floor Scrubbing Robot 3-cycle cleaning process pre-soaks, scrubs and squeegee finishes to remove up to 99.3% of common household bacteria Dual-compartment tank keeps clean and dirty water separated, keeping dirty water off your floors Choose from a 40-minute cycle, or a 20-minute cycle for smaller spaces Tank is easy to fill and drain, Avoids stairs and other drop-offs. What's In The Box:iRobot Scooba 450,Rechargeable Battery,Battery Charger,Virtual Wall,4-Ounce Bottle Of iRobot Hard Floor Cleaner,Year Manufacturer's Limited Warranty On Robot, 6-Month Manufacturer's Limited Warranty On Battery Kindly refer the video and the user manual given below for troubleshooting steps also keep your device updated to the latest software update for better performance. 3-cycle cleaning process pre-soaks, scrubs and squeegee finishes to remove up to 99.3% of common household bacteria Dual-compartment tank keeps clean and dirty water separated, keeping dirty water off your floors Choose from a 40-minute cycle, or a 20-minute cycle for smaller spaces Tank is easy to fill and drain, Avoids stairs and other drop-offs. Kindly refer the video and the user manual given below for troubleshooting steps also keep your device updated to the latest software update for better performance.