Let me start by saying that I really really wanted to love this robot. I had to persuade my husband to let me have it and after weeks of persuasion he finally agreed. I was very excited! I set everything up and sent it to clean the house and followed all the instructions. First, he doesn't suck in a logical way, he just walks around. Secondly, it gets caught in the corners of carpets and sockets. I ran it a few times to give it a chance to "learn" the house, but it got lost even when I only found a berth. I had to constantly lift and dock it. The suction power was quite weak even at maximum power. He didn't pick up very simple, tiny bits of trash, he just scattered them. I think I should stock up on sweeps. This is a return.