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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.
Some of the most effective natural remedies to keep ants out of your house can be found in your kitchen. Ants will crawl away from cinnamon, mint, red chili powder, and black pepper. All of them can be sprinkled on countertops or cupboards, as they're not poisonous and highly effective.