Chat Ants

My cat's food bowl is right by the door outside. She sometimes drops food out the bowl or I spill some out when I pour new food in. We have ant traps on the other side and one outside the door. BUT THEY KEEP COMING BACK. I always have to put her bowl on the other side of the kitchen after washing it out from ants. They just keep finding their way and a food cabinet is right there so we don't want them finding their way into our food. I just had to clear out a giant ant herd ugh. It only happens once every 3 weeks, but it's always frustrating. Funny how I was typing this and a commercial to get rid of ants came on. I know this isn't about guinea pigs but it's just annoying.