Moisture ants prefer to nest in water damaged, rotting wood. In nature, you can find colonies inhabiting fallen trees and tree stumps that are in the advanced stages of decay. Because moisture ants enjoy sweets, they can often come into our houses to feed on any sugar left unprotected; this can be annoying. And because they inhabit wood, they can cause accelerated decay in our homes. Colonies that develop in decaying wood of a house, like carpenter ants and termites, can weaken wooden structures.