I run a humidifier in our reptile room because we have a blow heater and no humidifier on it, which means our house is super dry in the winter. I run a unit I bought at walmart for $20 and it bumps up my room humidity about 15-20%. I've noticed I'm not having shed problems with the BPs since I bought it. My husband also commented that he wants to get another one for our bedroom because he noticed a big (good) difference in the air and isn't so congested after he's been in the reptile room.