I bought my small plastic cups in September 2010.
I put a post then (as Sensual Delights), two months later that I still had a lot of those left.
Even made a picture of my bathroom shelf at the time, lol.
Well bad news ... I still have about half of those cups, almost a year later
Doozer (25-07-11)
I find placing mouthwash strips in the bathroom to be more sanitary