This technology of using simple table salt and water to create HOCL, a disinfectant  for the air is really a interesting concept.  The machine is very user friendly thought there was a piece I wasn't sure where it was supposed to go and the directions were not clear.  I simply called up their customer service.  They were a dream to talk to.  The person was very personable and knowledgeable.  She first thanked me for becoming part of their family and then went one to help me understand the machine better.  
If you do use the purification option then you need to use non idolized table salt.  I asked her about grinding down coarse sea salt that I had but she didn't recommend it as she said it needed to be very fine so that it could dissolve in the water
Overall great  quiet machine with a touchscreen to easily pick your choices