People with allergies (hay fever) are often unaware that indoor allergens can be a significant trigger for allergy symptoms. Many different microscopic allergen particles are found in the home including pillows, carpet, or on the family pet. It is important to be aware that household fungi or mold, dust mites and pet dander also can affect the nose, eyes and sinuses as well. If you are like most allergy sufferers, you are frightened whenever you hear about elevated pollen counts in your community. Physicians have long known that environmental influences including indoor allergens (dust mites, cockroach and molds) often play a substantial contributory role in what is often referred to as hay fever allergic rhinitis.