Bests & Worsts Reviews from Amazon

After tried 5 times, I return it. The robot did not pick up all the dirt around the edge of the house. It also kept getting stuck under the chairs. I don't know how it got in but not smart enough to get out. Then 2 out of 3 times it just stopped and not returning back to its charger like it suppose to. The sad thing that I have to spent $55 for shipping it back. I hope I don't have to pay restocking fee too. That will be even worst because to try a product less than 2 weeks and pay a ton.