What should you do if an ant crawls in your ear?

Suffocate the bug: If this did happen, i would get some baby oil, fill up the canal & plug it with cotton & ignore it for a while. You can replace the oil several times over a day or two, then flush out the dead bug with a simple ear was product (murine makes a handy canister).

Ant Stings: I agree w dr ferguson. If this is a fire ant it is important to take action as fire ants can repeatedly sting you. They inject solenopsin - an alkaloid venom. About 15% of people who have been stung are allergic. In some cases this causes anaphylaxis. For a significant allergic reaction to fire ant stings call 911 or be evaluated at the nearest emergency room.

Let it crawl out.: Insects will crawl out once they find nothing of interest in your ear. Rarely will they create any problems. If they are stubborn , you can infuse a few drops a mild oil in the ear and force them out. Do not instill liquids in the ear to remove objects that will absorb liquids as they will expand and become lodged.