Robot vacuum cleaners are safe to use, but there are some hazards that you need to watch out for when turning them on.
The robot vacuum cleaner could get stuck under furniture and become a tripping hazard. It could also bump into things and knock them over, causing damage, breakage, or injury.
Nevertheless, robot vacuum cleaners are generally safe. Just be sure to keep an eye on them while they're running and keep children and pets away from them while they're in operation.