Everyday Cheapskate: 10 Ways to Get Rid of Ants Using Ordinary Stuff In Your Pantry
Once the ants walk in the fine powder, they'll die. The DE quietly destroys their exoskeletons.
A 50-50 ratio of water and plain white vinegar can also deter ants. Use this mixture to spray on countertops, windowsills and high-traffic areas.
Spray any areas where ants are feeding or accessing your house with WD-40. The spray will kill ants and serve as a deterrent from further access as long as residue from the spray remains. Not sure where they're coming in? Spray WD-40 along the outside perimeter of the house. They will not cross it because ants hate the smell of WD-40 (so do rabbits!). Repeat as necessary.
Get rid of ants by drawing a line around your home's entry points using ordinary blackboard or sidewalk chalk. The calcium carbonate repels ants.
If fire ants plague your yard or patio and you're tired of getting stung by those tiny attackers, a flowerpot can help you quench the problem. Place the pot upside down over the anthill. Carefully pour boiling water through the drain hole, and you'll be burning them and their house for good.