Mites and dust mites are distributed in sofas, bedding, plush toys, cushions, mattresses and even dust in smog. They feed on human sweat and dander, and their secretions can easily cause symptoms such as allergies and acne. It is better and more convenient to remove mites. I suggest you use acaricide. I have been using Fumat acaricide, and my asthma has recovered a lot before. It only takes 3 minutes to remove mites each time, which is convenient and fast. 400UV rays kill mites.