I am not sure, but I THINK you can rescrew the cap back on the Advantix. Then I'll put it in a baggie or something airtight. I'll check out the glass vials as well. My brother turns out to have a 1 ml syringe he can give me so I'm buying the size that has 6x the amount of the "right" size. I only see it available in packs of 4 so it will last 2 years! |