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You don't need insecticides or ant traps to ant-proof your kitchen. Just give it the lemon treatment. First squirt some lemon juice on door thresholds and windowsills. Then squeeze lemon juice into any holes or cracks where the ants are getting in.
Inside a home, carpenter ants will come out through cracks in a wall where they have nested. Carpenter ants will eat away at the wood inside of the walls and can lead to serious problems in the future. It is not recommended to pour extreme amounts of water into the nest as it is good for outside.