While your home is large enough to accommodate family and invited guests, it seems that it's the uninvited guests taking up the most space. Ants tend to invite themselves, and while they take a stroll through your lawn and settle into your home you are faced with the seemingly insurmountable task of handing out thousands of eviction notices. As bad as it seems, there are more than a few ways to send these unwanted visitors packing.
Squeeze lemon juice along doorways and window sills and inside of cracks, as well as areas you know ants are coming in through. Scattering lemon peels around the perimeter of your home will create an unappealing smell to ants that will make them stay out.
Mix 1 tsp. of boric acid into 2 cups of water and add 6 tsp. of sugar. Stir the ingredients to mix them up well and soak cotton balls into the solution. Place the cotton balls into small plastic containers and poke holes into them for the ants to come in. Reattach the lid and place the container in areas where ants are prevalent. When they take the bait back home for dinner, they won't be back for seconds.
Slice oranges in half and drop them in the yard. While the ants are busy enjoying how kind they think you were to leave them a treat, the birds will be thinking the same thing as they swoop down and carry the orange away, ants and all.
Locate the source of the ants and invade their home like they did yours. Pour boiling water into the anthill or douse it thoroughly with cayenne pepper. When the surviving ants find that their home is no longer inhabitable, they will move on.
Line trees and flowerpots with tape so that the sticky side is facing out. When ants can't reach their final goal, they will stick around and wait for you to dispose of them instead. Replace the tape as often as you would like to get rid of your new collection of immobile ants.