Mine has done somewhat well. It doesn't control humidity like the Heartfelt, but it does do pretty well as far as keeping me at a nice constant rate. My top divider usually runs about 70% RH and everything underneath it is right around 65%. So for the cost, it's really not a bad humidifier. My humidor is about to be near the full mark, so I'm going to look at something bigger than the 150 count. Maybe furniture style or a cabinet...who knows.