My initial symptom of having an allergy to dustmite was extreme rhinitis. In desperation I called your dustroy office to ask what I could do about it as after four nights I was desperately lacking in sleep. I had two bottles of dustroy delivered and immediately sprayed my bed , soft furnishings and the two large Persian carpets. That night I slept with a drastic reduction in my symptoms and immediately rang for another delivery of Dustroy! I would definately advise anyone in my predicament to make Dustroy part of their immediate treatment to combat Dust mite Allergy!