At the back of the door, we have red ants excavated their nest.It was mounted by soil and tear down papers.I have no plan to swept them away but it destroy the wood frame of the door.If they get disturb they spread out and nibble your feet.So, I get irritated my cousin place a salt to cover them but it was not helpful.I want to share some ways that we try to remove them:
1.Do not leave uncovered food that will attract them to stay.
2.Placed an instant coffee at the entrance of the nest repeat for a few times until you see them off
3.In circle a petroleum jelly around the entry point .
Actually, there are lots of branded repellent products but it is better to try the cheapest way to remove them.