When ants escape what do they do? Here are their top choices: 1. Sadly linger on the lid of the formicarium hoping to let back in. 2. Menace the lid of other ant colonies. 3. Menace the feeder roaches. That last one surprised me. One little ant wants to try to take on 8 dozen dubias all by herself. This would be like if you ran away from home, then hung around a beef ranch with a napkin tucked in to your collar and knife and fork in each hand licking your chops at the cows.