Nearly 100,000 dust mites can live in one square yard of carpet, along with all the other allergens that accumulate on the floor. Weekly vacuuming is essential to keeping carpets clean and allergen-free. Under furniture and in crevices against the wall are especially dust-heavy, so do a really thorough cleaning once a month. Move furniture around to get places you usually can’t reach, and use the nozzle attachment to get into corners.
In addition to vacuuming, have area rugs and carpets dry cleaned regularly to kill mites and get rid of their droppings, as well as other fabric pollutants.
A mini-vacuum is a good tool to get the dust out of upholstery. Or use the nozzle attachment of an upright vacuum, making sure to get in between and under cushions.