Raid ant traps work well. But, it takes a while. They work with slow poison, so the ants eat it and live long enough to take it back to their nest and feed it to other, including the queen, and kill more ants. So you will not immediately see a complete reduction in ants.

Set your cats food dishes in a larger dish of water. This will keep the ants out of the food.

If you can see where the ants are entering the house, or their trails, you can put a line of cayenne pepper down. They won't cross it, and will go elsewhere.