Hi. My son does nebbed albuterol 3x/day with a mask, pulmozyme 1x/day with a mask, and uses an inhaler 3x/day with a mask and a spacer. I have been using a new (clean and boiled) neb and mask every treatment, or spacer and mask every time he uses the inhaler. So I boil nebs, masks, and spacers for the inhaler once a day (I have enough of all to get through one day). Is this necessary? Do I need to use a new one every treatment?