They sell isopropyl alcohol in bottles with caps that have a small opening in them and a flip top. That's what I used to use. Not totally mess-free, and I would get a little dribble down my cheek, but not too bad. Then I found a small bottle at REI in their travel sundries section. It has a long, tapered dispenser and a little cap that fits on top. It works perfectly.I have seen posts by people adamantly opposed to using alcohol in the ears. I can’t remember the reason offhand. Personally I use 50-50 mix. The tricky part is finding a suitable dispenser.