We have an infestation of such a tiny bug that it is invisible. They are not in the air but are on floors and settle on upholstery and bed covers. They bite and cause constant scratching, I have read they could be mites (acaros) . They are NOT no see-ums, bedbugs or fleas or bobos etc. They are inside and outside the house. Have not had them in earlier years.Been around for months. They dont like the evening cool but come out in the heat. Anyone else had such a problem and solution? Are there any floor cleaners that have insecticide in them?