The best thing you can do is to limit the amount of dust in your home. Some of the most effective ways to do this include:
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Use an air cleaner with a filter. This can help remove some allergens (such as pollen or animal dander) and tobacco smoke from the air in your home.
If you have wall-to-wall carpet, tear it out and replace it with wood or tile flooring if you can, as it’s one of the leading causes of excess dust in the home. You should also avoid furniture covered with fabrics. Use pillow and mattress covers made from a tight-weave fabric that keeps out dust and dust mites. Use furniture made of wood, plastic, leather or vinyl that you can wipe clean.
Dust and vacuum once or twice a week to remove the buildup of allergens. Use a dry cloth to wipe hard surfaces such as countertops, tables and other furniture.
Put airtight, plastic dust-mite covers on pillows, mattresses and box springs.