Hi, Decontaminate your decor. Minimize dust that may worsen nighttime symptoms by replacing certain items in your bedroom... Prevent mold spores. Clean damp areas in the bath, kitchen and around the house to keep mold spores from developing. Get rid of moldy leaves or damp firewood in the yard. Reduce pet dander. . Clean regularly. Clean your home at least once a week. If you're likely to stir up dust, wear a mask or have someone else do the cleaning. Cover your nose and mouth if it's cold out..