There are a few natural ant repellents that you can try. One is to mix equal parts vinegar and water in a spray bottle and spritz it around your doors and windows. Another is to mix together 1 part baking soda and 3 parts sugar and set it out in a dish where you’ve seen ants. The ants will be attracted to the sugar but the baking soda will kill them. You can also try using boric acid, which is a natural insecticide. However, it can be harmful to pets and children if not used properly, so make sure to follow the directions carefully.