Keep clutter to a minimum. Books, papers and the like are dust traps. Clean weekly to prevent dust build-up. Keep humidity low, under 40 to 50 percent. Buy HEPA filtration products for your air cleaner and vacuum cleaner.
Molds cause symptoms similar to hay fever in some people, and asthma-like symptoms in others.
To reduce the effect of outdoor molds, keep windows and doors closed and use air conditioning to filter out allergens. If your home is humid, especially if you have any leaks or carpeting over cement floors, take these steps to reduce indoor allergens. Remove the carpeting and apply a sealer to the cement to prevent moisture seepage. Clean any visible mold with detergent and chlorine bleach. Discard non-washable items that show evidence of mold growth.