To make this homemade ant killer: Get an 8 ounce bottle. You can find these at the Dollar Store or at places like Wal-Mart (look in the travel sized section in the beauty area or near the irons). Also, you could re-purpose an old spray bottle that you’ve recently emptied. Fill this bottle with about 3/4 water and 1/4 vinegar. Ants get around by following scent trails and vinegar disturbs this. Squirt in a nice amount of dish soap and gently swish.