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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.
1 Feed the ants cornmeal, which they are unable to digest. 2  Mix it with powdered sugar to make it more appealing. 3  Spray ants directly with vinegar or a solution of water and baking soda. 4  You can also spray these products directly on the nest or in and around areas where the ants are entering your home. Mix it with powdered sugar to make it more appealing. 2  Spray ants directly with vinegar or a solution of water and baking soda. 3  You can also spray these products directly on the nest or in and around areas where the ants are entering your home. 4  13 Edit step.