On cleaning: talked again to my Pulmonary therapist. A year ago, she told me the easiest way: buy a baby bottle sterilizer. The Phillips Aventi cost about $19. Put 7 oz water in bottom. Lay all mouthpiece components on bottle rack. Close. Microwave 2 minutes. She reminded me I need to do that every day, once a day. As for tubing, just look at it to see if any moisture or droplets inside. If so, plug the compressor back in, run air through tube a couple of minutes, watch the drops fly out. Total cleaning time per day about 4 minutes.