Us live together peacefully with more than 500 different species of arthropods. About it tell results of research of American scientists. They studied 50 homes and found insects in the pillows, under floorboards and baseboards, in the shower and the toilet, everywhere. However, nothing wrong with that.
In each house, according to the study, there are between 32 to 211 species from 24-128 families. Most often one is confronted with cockroaches, flies, spiders and ants, but this is only the tip of the iceberg from a life running parallel with the human.
Secret neighbors live absolutely everywhere, and to fear such a neighborhood in most cases not worth it. Some microscopic insects can cause allergies, then you should conduct a thorough cleaning and replace feather pillows with synthetic.