Keep indoor air clean

  • Use the air conditioning in your house and car.
  • If you have forced air heating or air conditioning in your house, use high-efficiency filters and follow regular maintenance schedules.
  • Keep indoor air dry with a dehumidifier.
  • Use a portable high-efficiency particulate air (HEPA) filter in your bedroom.
  • Clean floors often with a vacuum cleaner that has a HEPA filter.