@scoop. Hi. I've been dealing with the cleaning process of neb kits for five years. It has evolved as I've learned more methods and what works for me. As you've seen the ways to accomplish this are numerous. I think if getting so many kits so you don't have to sterilize so often is good if that works for you. I do have numerous kits but I still do cleaning after I've done 2-3 treatments. I then clean those and put them on paper towels to air dry. I then begin with those same kits with the next treatment so it is a fairly short turn around. If I were to need to store them because I've cleaned so many at once, what I would do is make sure they are completely dry and then put them in a covered plastic container. Best to you. Faye