In order to get rid of ants, you may use coffee grounds.

After preparing your morning cup of coffee, you should let the used coffee grinds cool down.
After the grounds have cooled, place them in a small container for use either immediately or in the future.

Techniques of Application That Are Effective:
Direct Application: Sprinkle cooled coffee grounds directly over ant hills or along their known pathways to disrupt their smell trails and discourage them from crossing. This will prevent them from approaching the area.
It is possible to create a barrier by spreading a line of coffee grounds around the base of your house, near entrances, or any other access points in order to prevent ants from entering your property. This is known as perimeter defense.

Coffee grounds may be used inside by placing tiny quantities of them in locations where ants are active, such as on counters, shelves in the pantry, or in close proximity to access sites.
For the best possible results with an ant repellent:

Reapply the coffee grounds on a regular basis, particularly after it has rained or there has been a lot of moisture, in order to maintain their efficacy.