Finding ants in your flower pots can be a discouraging, hard-to-predict situation. While the ants might simply help make the soil richer in nutrients by breaking down organic materials and eating other pests, the ants could also start to eat the leaves of the plant in your flower pot. Also, many gardeners find a colony of ants streaming around their flower pots to be unsightly. Luckily, you can get rid of ants from your flower pots by making the pots seem undesirable to the ants.
Hold a pepper mill over the soil of the flower pots. Crank or turn the pepper mill so that freshly crushed black pepper falls onto the soil. Turn the pot and continue to crank the pepper mill. Cover the soil of each flower pot with an even amount of black pepper.
Shake baby powder around the ledge or floor that supports the flower pot. Baby powder is a natural ant deterrent and will prevent the ants from even approaching your flower pots. Another good way to deter ants is to mix equal parts liquid dish soap and glass cleaner in a spray bottle, and spray it on the ground around the plants.
Stab holes into plastic, lidded containers such as clean, empty margarine bowls. Boil 2 cups of water in a pot, and dissolve one cup of sugar in the mixture. Add a tablespoon of borax. Mix well.
When the solution cools, dip a handful of cotton balls into the mixture and allow them to soak it up. Put three or four cotton balls into each container and replace the lid. Place these homemade traps along the ant trails you've seen. The sugar will attract the ants, and the borax will kill them.