When shopping for a bag, look for the words 'microfiltration' or 'allergen'. These bags will prevent your vacuum from ejecting the dirt, dust and dander back into the air after you've vacuumed. Dehumidifiers Mold is a primary contributor to allergy symptoms. Stop mold and mildew before it can form by using a dehumidifier to remove excess moisture from the air. Just open the tub, pour the crystals out of the bag, leave in a corner and drain every week.
Refills are also available.
All of these are simple yet effective ways of enhancing your home's allergy defenses. For the ultimate in defense, you can use all of these products together.