Locate the source of the mold spores. Search the home for target areas such as showers, bathtubs, windows with moisture, basements, wall paneling, and soiled carpets. Other likely locations are underneath sinks and near washers, where there is possible water drainage and retention.
Remove mold by using bleach on shower tiles and grout. A solution of one part bleach to one part water is effective and not too overpowering to breathe. Use a spray bottle to drench the infected area with a coating of the solution. Let the mixture set on the area for 30 minutes, then remove with a scrub brush. Remember to wear gloves and safety goggles whenever working with corrosive materials like bleach.
Keep airflow in the house steady and unrestricted. Use fans in the bathrooms and kitchens to ventilate the area from moisture. Keep windows cracked approximately two inches, if the weather permits.
Limit the humidity in the house with a dehumidifier.
Allow sunlight to enter every room of the house. Mold spores prefer low light areas.
Wash all carpets and drapes to remove spores that have clung to the fabric.