Little pests are small creatures that can cause a lot of trouble. Gnats, ants, IMPS, and army ants are all examples of little pests. Gnats are tiny flying insects that can be a nuisance in the home. Ants are small, social insects that live in colonies and can be found in many places. IMPS are mischievous, mythical creatures that are often associated with mischief. Army ants are large, aggressive ants that travel in large groups and can cause destruction to their environment.