Dust and mites cannot hide
A speck of dust may contain fabric fibers, human skin, bacteria, animal danders, pollen, grains, moulds spores, food particles, mites and mites-droppings. Mites cannot be seen without a microscope. They thrive in warm and humid conditions. Because they feed on skin scales, they love bedding, carpets, upholstered furniture, clothing, closets and car seats. They usually survive ordinary vacuuming because they burrow deep and are equipped with sucking pads on their feet.
Dust cannot hide on wooden flooring, mites can not hold on to wooden flooring, and ordinary vacuum cleaning will remove it all.