My sn got a new holding chamber/mask for his inhaler, this one cannot be boiled. I have been soaking it in alcohol for 5 min then rinsing with sterile water. My question is, can I only use the alcohol one time, then have to throw it out? Or can you pour it into some sort of tupperware type container and use it a few times to soak the chamber before discarding? I'm going through a lot of bottles of alcohol here!