I have a probably silly question. I figured you diy-ers might have a solution. I have some 30ml glass bottles with droppers. I had these before I started vaping (I don't remember why). so I transfer my liquid into these smaller bottles for daily use. almost all of them are messy. the rubber you "squeeze" to use the dropper leaks so when I use it my fingers get all yuky. it's annoying. does anyone else have this problem and maybe a solution? thanks