If it's glass, you can just use a 10:1 water/bleach solution, followed up by a liberal rinsing, then a few drops of Dawn and some hot water to really clean it up.
Literally the smallest drop of Dawn, hot water, shake the hell out of it. Rinse and shake, and repeat till there is no soapy water. Bleach works to, but I like soap, I feel like i'm doing more, can see something going on.