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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 Spraying the nest can be effective, but you want to make sure that you get them all. 2  If you only kill part of the colony, you may simply encourage some species of ant to establish new colonies â which ultimately won't stop ants from coming into your home.3  For a less hands-on solution, vacuum them all up. You also don't want anyone in the house (especially pets and children) sniffing it up. 2  Try using salt. 3  It has a similar drying-out effect on ants, especially if they carry it back to their nests. 4  You can spread it under doors, near windows, and along the edges of your walls.