How to repel Carpenter ants?
A cinnamon stick, coffee grinds, chili pepper, paprika, cloves, or dried peppermint leaves near the openings will repel ants. You can also squeeze the juice of a lemon at the entry spot and leave the peel there. Planting mint around the foundation of the house will also keep ants away
Peppermint is a natural insect repellent. You can plant mint around your home or use the essential oil of peppermint as a natural remedy for control of ants. Ants hate the smell, and your home will smell minty fresh! Plant mint around entryways and the perimeter of your home.
If you see ants, wipe them up with a solution of 50-50 vinegar and water, or straight vinegar. White vinegar kills ants and also repels them. If you have an ant problem, try using diluted vinegar to clean hard surfaces, including floors and countertops, throughout your home.
The secret to getting rid of your ant problem is something called Borax, a 100% natural product found in most ant-control products. You can find it in most supermarkets pretty easily. Soak the Borax mixture up with cotton balls, and then place the cotton balls near any trails the ants have established in your home