Samsung has really stepped up their game on this product.  We love using this robot vacuum on our top floor especially because it's able to go into the small nooks and spaces between the kitchen and living rooms.  It has saved us so much time!  We are amazed at how much dust and dog hairs it's able to pick up.  The clean station stand has a built in vacuum which takes all the trash from robot and collects them into a separate compartment for disposal.  We're able to watch the vacuum from an app on our phone to see which areas have been cleaned.  The only downside is that it's restricted to one floor. I love this product and wish we had one for every floor in our house!