To kill mold in your home, a humidity level below 50% is required. Ideally, a humidity level of 35% is optimal to kill the mold. Reducing the humidity level in your home will reduce the moisture levels in the air, leaving your mold without its prime growing conditions.
You can do this by ventilating your home well or purchasing a dehumidifier. While these methods successfully remove the moisture from the air that mold loves, it does not necessarily kill the mold present in your home. A dehumidifier can be the ideal solution for rooms that are not frequently used, such as basements.
While lower humidity levels will decrease the levels of mold growth in your home, it does not always kill the mold spores present. In these cases, follow the lower humidity levels with other mold treatments such as remedies applied to the mold directly to remove it from your home.