To be honest I wasn't expecting to see a lot of dirt in the bin after running it for a while as I had just cleaned it but it was LOTS of fine dirt. It's certainly not the most expensive device out there, and it has some limitations (e.g. it has to be plugged in to charge instead of a docking station and no programmable start time), but the suction power feels great. I'm surprised how much he picks up every time!. The charging time is advertised as 4 hours, but it usually takes me around 2 hours. I also get a total running time of around 90 minutes. Although I've only had the device recently I can safely sit on it, it's quite durable as my young son has thrown it and jumped on it (trying to ride on it) at least 20 times.