We just had this problem!! We used the Raid and wiped it up with those Clorox wipes...but the smell was TERRIBLE! (we even bought the flowery scented one) That wasn't the worst part, even though I wiped everything down with those Clorox wipes, I was scared to let the cats in the bathroom (or kitchen counters, which they aren't allowed on anyway....at least when I'm there to stop them! )

So, we went to our local PetSmart to find something that was non-toxic to the cats. They didn't have anything! So, my huby started spraying 409 cleaner and then wiping it down...haven't seen any ants since....

I've heard that if you put salt out, they wont cross that either.

Hope that helps! Do you know where the ants are coming in from?