Perennial Allergic Rhinitis (PAR) or Nasal allergies are types of Indoor Allergies that often occur when allergens are inhaled through our nose to our lungs. Some common Indoor allergens are dander from house pets like cats and dogs, micro excrements of dust mites and mould spores. Each time we breathe air in we inhale milions or dust particles, allergens, chemical polutants and other foreign matters.

One of the most potent source of biological allergens are caused by the common house dust mites and some species of moulds and they both thrive in warm, humid and dusty environments. These allergens are microscopic and cannot be seen by the naked eye. The common house dust mite for instance meassures one third of a millimeter and their diet is composed mainly of human skin flakes. These flakes are shed off everywhere including house furnitures, carpeting, bed sheets and even in the stuffed toys. But flakes and dust mites (and their by-product) are not the only problem. Household dust are composed of many other things like tiny fibers, dander from pets, bacteria, microscopic mites and fungus, moulds and spores.

Dust mite wastes causes allergic reactions and not the dust mites themselves. The excrement of a common household dust mite contains a protein that is a potent allergen. During its life span, a dust mite can produce 200 times its weight in excrements.

Most species of dust mites cannot tolerate low humidity or high temperatures but after they die, they leave their waste behind which promotes allergic reactions. Dust mites can easily live up to a year in a warm and humid environment.

According to recent studies, the highest concentration of dust mites are usually found in the bedroom more than anywhere else in the house, therefore, to resolve most problems involving allergies we must consider starting in our bedrooms first.

Getting rid of allergen source is the best way to reduce the effects of allergens but vacumming is not enough to get rid of them as 95% of these mites and their waste embed themselves deep into the crevices of our pillows, carpets and furnitures.