Ants may be annoying pests to have crawling around the houses, but outdoors, these tiny critters play a big role in creating a stable ecosystem. For starters, ant nests in the soil allow air to circulate in the ground, which is beneficial to the soil and plant roots. Ants that feed on plants help clean up the environment by consuming unwanted plants. And as they process their food, ants also help enrich the soil. Ants help gardeners and formers by eating pests (in the larvae stage) that are harmful to crops and orchards. Ants that feed on nectar help in pollinating as well.