I'm in a studio of 30 m² with a lot of moisture with mold on the wall since I have put that I absorber is no longer a single nothing musty smell of humidity after cleaning a large wall bleach since I have the camera I have more mold on the walls (whereas before I clean the walls every month) c is nice and cheap products which are duplicate job recharge my last two months do not hesitate if you have mold product are well done job