I bought the vacuum cleaner in early December, so it has been in use for a month. I am completely delighted! I bought shampoo for washing vacuum cleaners - the floor just creaks from cleanliness after cleaning. I haven't found any major cons so far. Yes, it must be thoroughly washed after cleaning and allowed to dry (this is written in the instructions), otherwise it will stink. Yes, the battery is likely to degrade over time and the time of continuous operation will decrease. At the moment I am very satisfied.