I'm thinking cleaning/ sterilizing should be under a different thread?
Best to follow manufacturers instructions for cleaning and then sterilizing. Some people use Medela micro-steam bags generally used for sterilizing baby bottles etc., or baby bottle sterilizers using previously boiled water. Some use rubbing alcohol or hydrogen peroxide (takes 3x longer than alcohol). Some use deposable neb cups and avoid sterilizing altogether. Wish there existed a small autoclave for neb gear. Baby bottle sterilizers are big. I've always wondered about UV light wands. Do they work on our stuff? Anyway, a good reminder I need to clean/sterilize my spacer!
https://www.amazon.com/gp/product/B00S0U5X18/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1