I have large black wood ants nesting in my door frame. The back door of my house started to have saw dust fall from the frame and when I took a closer look, I spotted several large black ants run into the crack between the molding and the wall of my house. I know they're living in there and want them gone as quickly as possible. I haven't done anything yet but figure there should be a good spray to use. What would you suggest?

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