Works well. Isnt loud, but not silent.  The heat output is about 35 degrees Farenheit over the ambient room temperature(I did measure it for 10 minutes with a digital thermometer probe). Would be nice if there was a disinfecting setting that would heat the shoes to 175, but this could easily cause someone to get burned.  So i can understand this not being implimented.  I would recomend buying this.