Ants may appear suddenly in your house if you aren't storing food properly. ... The smells from the food will be beacons to ants outside the home. Make sure that you keep all food in airtight containers so that ants cannot pick up the smells coming from that improperly stored food.

Why do ants suddenly appear out of nowhere?

Causes of Ants

The most common reason that ants invade is because they have found access to sugars and uncovered foods. ... When they do, they go back to their nest, send a message to other workers, and suddenly swarms of these ants will come into your house to pick up food for the rest of their colony.

How do ants show up out of nowhere?

Behind kitchen cabinets

Tiny grease ants may seem to appear out of nowhere and sneak into food containers. However, they are actually appearing out of tiny gaps and cavities in the kitchen, including spaces behind kitchen cabinets. Such nests can be difficult to find, but baits may work.