I can if I really wanted to but the problem is that they'll most likely be able to climb the glass, get past the vaseline layer, and I'm pretty dang sure they'll have absolutely no problem squeezing through the small air-holes, I might have to get a much bigger jar and make needle thin airholes. I'll check and see if I have an extra jar lying around.
Yeah, or that I guess. Make sure it's closed properly and such though.