i use this bad boy in the walk in wardrobe since its next to the bathroom in the master bedroom. the wife is always using up those disposable dehumidifiers all the time so i got sick of them not working properly if its nearly full. if you dont constantly check them out then no dehumidifying actions. works well. slick. not loud. with this guy, you dont have to worry anymore. works just as good empty as nearly full. just empty it out when its topped up. 500ml is quite a big amount for a small room. get the larger one if u need to use it in the laundry room with a dryer. just saying.