They can't keep their nests clean because their nests are on the ground.
Legs
no anteaters don't like nest ants get in it and they do not like ants
yes,they do.
No But They Do Live In The Same Branch (Seprate Nests)
No they do not, all ants thrive together to make huge nests
They have guard ants that are bigger than the others.
There certainly are ants in the wood. You just have not looked in the right places at the right times. If you looked during the winter in a cold country you might not see ants above the ground, because their colonies all are deep underground in their nests where they can keep warm till springtime comes.
if they are from different nests then yes
Carpenter ants prefer dead, damp wood to build their nests in.
Nuke it from orbit. It's the only way to be sure. Or kill it with fire.
Most creatures defend their turf, but fire ants are especially dangerous because of their sting, and very aggressive,
No their nests are designed so that water cannot enter and if it does they can close up the hole/s.