Use your air conditioner. Air conditioning reduces the amount of airborne pollen from trees, grasses and weeds that finds its way indoors. Air conditioning also lowers indoor humidity and can reduce your exposure to dust mites. If you don't have air conditioning, try to keep your windows closed during pollen season.
Decontaminate your decor. Minimize dust that may worsen nighttime symptoms by replacing certain items in your bedroom. ..
Maintain optimal humidity. If you live in a damp climate, talk to your doctor about using a dehumidifier.
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. If you're allergic to dander, avoid pets with fur or feathers.