Product review (2 stars): won't do this again.
wow. like the humidifier. the first sleeve lasted quite a while. the 2nd one lasted about a month. the 3rd one lasted about 2 weeks. pricey for so little use.
fyi, I clean the humidifier regularly, don't let it run empty. these things are cheap. not sure how i'll proceed now. I just put the humidifier away.