Ants do not eat aphids. When they climb trees, they look for aphids, but they don't eat aphids, they eat honey dew secreted by aphids. In return, ants will protect aphids, so that their natural enemies, ladybugs, can't get close to kill these pests. Ants don't eat trees and leaves. Ants climb trees because they have food they need, such as worms or aphids. So ants don't go up trees to suck sap, they only suck sap when they know it.

Moreover, before the cold comes, ants will bring aphids, scale insects, horned cicadas and gray butterfly larvae to their nests, and prepare to absorb the excrement of these insects as food (milk honey) in winter; Before the severe cold comes, weed seeds are transported for sowing in the next spring.