I know it sounds like a silly question. But a month or 2 ago, I went crazy on getting samples of juices. I had about 5 stardusts and I'd fill them up each about half way. Sometimes, though, I'd just let them sit when I found one particular flavor that I liked. When I came back to the others, I had completely forgotten what I had put in there. Anyone else have this problem? Any good solution? I was thinking about labeling my tanks or stardusts, and just keeping one and and only one flavor in it.