Review on Ideal Cleaning Companion: iRobot Roomba i4+ EVO (4552) Robot Vacuum with Automatic Dirt Disposal - Empties Itself, Up to 60 Days of Effortless Cleaning, Wi-Fi Connected Mapping, Alexa Compatible - Perfect for Pet Hair & Carpets! by Kristen Reid

Didn't work in our house. Too much furniture? Despite the fact that we cleaned the garbage before each use, less than 1000 square meters remain. ft. still lasted 4-1/2 hours (8-1/2 hours including charging) and the battery was almost dead. The battery was empty twice, causing the device to hang in the middle of the room. He doesn't remember where he's been, wandering aimlessly, making the same space three times. I figured it would render walls and furniture and avoid them in the future. No; With each use, he bumps against each piece of furniture several times. This will damage the furniture. Returned. May be suitable for small area or with thick pet hair etc.