The filters in the Dyson will stop wristwatches and babies from being thrown out of the vacuum, but most anything else will be sucked up and blown back out again. The "Dual Cyclone" design of the Dyson vacuums use the principle of cyclonic separation to remove dirt from the air. Unfortunately this method doesn't work very well for small particulate matter. The sales pitch is, however, very impressive but the vacuums aren't.