Try baby powder or talcum powder on the ants and their ant trail.
Use vinegar to destroy their trails. You can use it full strength or dilute it with water.
Cinnamon or black pepper – from the spice rack – is increasingly being used in garden insect control trials and products. You can dust the indoor and outdoor nests. Sprinkle it around where you see them coming into the house.
Bay leaves have been used for centuries for ant control. Put a leaf or two behind canisters on the counter, in your silver drawer, food shelves, anywhere ants have congregated. Whole cloves are supposed to do the same thing.
Peppermint sprayed around the edges of your house and ant entry points will deter ants as will growing peppermint and other mints in your foundation planting. Spraying a mint extract or heavy mint tea might help; as long as it leaves a minty smell behind it is strong enough
Diatomaceous earth will cut up ants as quickly as it cuts up other small insects. You can scatter this around and it is not dangerous to humans or pets unless breathed in quantity.
So there’s the word on natural ant control. Good luck and happy gardening!