Brio will remove the airborne irritants which can trigger an allergic reaction. Brio's powerful fan draws suspended dust and invisible fine and ultrafine particles into the APART Collection Cartridge without clogging a filter. In our lab testing, Brio removed two to four times more dust than the competitive HEPA air purifiers tested, and still retained 90% of it's original effectiveness, while the tested HEPA purifiers dropped to 50%! What that means for you is ongoing effectiveness between filter changes and a lot fewer filter changes. Keep in mind that heavier, visible dust may fall to the ground and won't be drawn into Brio's air purification chamber.
For heavier dust that has landed on surfaces, you'll still need a vacuum or a dust cloth (Brio works wonders, but it's not magic).