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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.
Ants nest in soil near their food source. Ants are useful predators that feed on termites, caterpillars and fleas. In the yard and garden, however, ants give refuge to destructive honeydew-producing insects, including whiteflies, mealybugs and aphids. Protect your property from these pests by growing outdoor plants that repel ants. Grow mint, tansy, common yarrow and garlic in your yard and alongside your foundation to stop ants from invading your home. Their scent can repel ants or disguise the odors that attract them.