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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.
Protecting Your Home from Ant Scouts. 1  1. Heed the scouts. The first sign of ants in your kitchen is a warning to you. 2  2. Clean dirty dishes immediately after using them. Wash all dishes as they're used or place them into the dishwasher and shut the door tight. 3  3. Sweep and vacuum the kitchen area daily.