This Milbensauger is worth every penny, because before I had bought it, I did not know that I had a mite problem, especially in bed. I had constant runny nose and sometimes so bad that there was a headache - doctor diagnosis was chronic sinusitis! Now I have completely cleaned the Milbensauger only once the bed, so mattresses, trailer, down duvet and pillows, as well as the laundry washed at 60 degrees and tumble-dried. It is mind boggling what was there for dirt in Milbensauger. I have always thought, my bed is clean with the normal vacuum cleaner, but now I really know what is clean! Suddenly my cold is gone and I can even get better smell than previously. I had typed before on pollen allergy because just when it gets warmer outside, my complaints were also exacerbated by burning eyes to the cold. Even the ophthalmologist tapped a pollen allergy, as I was once there for routine check. So who knows these symptoms, which should necessarily buy the device, I highly recommend it and will it now use every week for cleaning throughout the weekend drying.