I owned one of these previously and used it for work (toddler groups) for 9 months. It was great and the little ones always loved it. Unfortunately that one broke a couple of weeks ago and I ordered another one immediately. I know that machines like this can be a bit temperamental, so I ensure that the machine is only ever used by me, that it stays upright etc and yet (mid session!!) it stopped producing bubbles on Tuesday (cue some very sad children). I will be contacting the seller but just wanted to make people aware of my experience.