Let’s look at those rooms that are at risk. These are rooms with high humidity. These include: greenhouses and greenhouses, cellars and basements, rooms for storing vegetables and fruits, pets and birds. In addition, these are basement premises of high -rise buildings. These also include impatient rooms with high humidity and those where moisture condensation occurs. It is necessary to process both external surfaces that are clearly visible to others and hidden, about the degree of infection of which you can only guess.