Just found this by doing a google search:
"Constituents of House Dust: ash, cigarette; ash, incinerator; combustion products; fiber, synthetic textile; fibers: wool, cotton, paper and silk; fingernail filings; food crumbs; glass particles; glue; graphite; hair, human and animal; insect fragments; oil soot; paint chips; plant parts; pollen; polymer foam particles; salt and sugar crystals; skin scales, humans; skin scales, pets; soil; spores, fungal; stone particles; tobacco; wood shavings
Dust Management: Getting rid of allergy-inducing dust mites and other allergy-inducing constituent of dust is related to eliminating dust from the environment. The most important tool for managing house dust mites is the vacuum cleaner. Regular, thorough vacuuming of carpets, furniture, textiles and other home furnishings such as draperies will help keep dust mite populations low. Avoid wet-mopping because it increases moisture in the air. Where wet-mopping is necessary, as in kitchens and bathrooms, vacuum thoroughly first. Vacuums with a water filter are preferable to those with a disposable paper bag because a water vacuum removes a greater range of particle sizes than paper-bag types. There are a number of vacuums with highly efficient filters designed for use by people with allergies to dust. It is better to vacuum thoroughly once a week rather than lightly on a daily basis. Vacuum mattresses and padded furniture thoroughly; 20 minutes for each mattress is not too long. Dust furniture before you vacuum so the dust has time to settle on the floor, where it can be picked up by the vacuum. Special dust cloths or other cleaning implements that are treated chemically to hold rather than scatter dust may be helpful. You may also wish to use an electrostatic precipitator to help reduce small particles in the air.
Cleaning/Heat Treatments. Shampoo, steam clean, or beat non-washable carpets once a year. This removes large particles missed by the vacuum cleaner. Wash sheets in soapy water at 140 F every one or two weeks to kill all mites. Take blankets to the dry cleaner, hang them outdoors once a year, or wash them frequently. In the wintertime in Nebraska, the house, furniture (mattresses, overstuffed furniture), or bedding can be exposed to the outside cold for one or two days to kill the dust mites. Alternatively, a study has shown that using an electric blanket for eight hours every day reduced mites in mattress by 50% in one month. Another study documented that heating blankets in a clothes dryer for several hours killed mites. If this is done each month with one annual dry cleaning or wash, house dust mites can be held to a minimum.
GREAT! I sure can't do most of the things mentioned---vacuumiong the mattresses for 20 mins--_COME ON! GET REAL! 
HAHA 
