I don't think the ones I have will open. You have to squirt it in through a membrane with a hole in the bottom end. I do have another one which you take the bottom off and could drizzle Tabac or anything with a flow restrictor instead of a spray pump type (you can also spray it in the hole). In fact I forgot I had that until you said. It is slightly fatter. Let me see if I can find it and take a pic.