You’re right, Argentine ants are actually becoming more numerous as they expand their range worldwide. The bad news is that they are virtually unstoppable as an urban pest species; the good news is that they usually disappear on their own after invading your home & pantry for a month or so. They usually move into homes during extremely dry weather or extremely wet weather. The reason they are not controlled effectively by ant baits or household sprays is because their colonies are so large, there is virtually an endless supply of replacements for every one you kill. Some ant baits work on the principle that the poison will ultimately get to the queen, kill her and thus end the colony, but Argentine ants have multiple queens, and form extensive mega-colonies (your entire community may be inhabited by one colony represented by several million workers and thousands of fertile queens!).
My only recommendation is: clean, clean and clean some more. Keeping them from accessing crumbs and other morsels of food will help discourage their visits. The cat food bowl can be smeared with a thin band of petroleum jelly at it’s base to keep them from gaining access to it. Good luck.