1. Identify the type of ant. There are many different types of ants, and each type has its own unique habits and preferences. Some ants are more likely to nest in soil, while others prefer to nest in wood or other materials. Knowing the type of ant you're dealing with will help you determine the best way to eliminate them.
2. Remove any food sources. Ants are attracted to food, so one of the best ways to keep them out of your pots is to remove any potential food sources. This includes spilled food, pet food, and compost piles. If you have any fruit trees or other plants that produce fruit, be sure to pick up any fallen fruit as soon as possible.
3. Use ant bait. Ant bait is a type of poison that is specifically designed to kill ants. It is typically placed in areas where ants are known to frequent, and the ants will eat the bait and take it back to their colony, where it will kill the entire colony. Ant bait can be purchased at most garden supply stores.
4. Use diatomaceous earth. Diatomaceous earth is a natural powder that is made from the fossilized remains of diatoms. It is harmless to humans and pets, but it is deadly to ants. When ants come into contact with diatomaceous earth, it damages their exoskeletons and causes them to die. Diatomaceous earth can be purchased at most garden supply stores.
5. Use boiling water. Boiling water can be used to kill ants instantly. If you see a colony of ants, simply pour boiling water over them. Be careful not to splash yourself with the boiling water.
6. Seal up any cracks or crevices. Ants can enter your pots or flower beds through small cracks or crevices. To prevent them from getting in, seal up any gaps with caulk or sealant.
7. Use sticky traps. Sticky traps can be used to catch ants. Place the traps in areas where you've seen ants, and they will get stuck to the glue. Sticky traps can be purchased at most garden supply stores.
8. Encourage natural predators. There are a number of natural predators that can help you control ants, including ladybugs, spiders, and birds. If you encourage these predators to live in your garden, they will help to keep the ant population down.