Ventilate the attic and crawl spaces to prevent moisture buildup. Clean humidifiers regularly and refill with fresh water daily. Humidifiers can become breeding grounds for biological contaminants that can cause illnesses. Evaporation trays in air conditioners, dehumidifiers, and refrigerators also should be cleaned frequently. Thoroughly clean and dry water-damaged carpets or consider removing or replacing them.
Wet carpets can harbor mold and bacteria.
It is very difficult to completely rid them of contaminants. Minimize pollutants in basements . Clean and disinfect the basement floor drain regularly. Cleaning solutions can release toxic fumes. Never mix chemical products, especially chlorine bleach, with an ammonia cleaner.