If you use raid it will only kill the ants you see. Like Dawn said....try and see where they are coming from and seal it. If you cant I would use Terro or some kind of ant trap. That way they take it back to the nest and it kills all of them.
Living in Florida I have been constanly battling ants. Could Luck. Just be glad you don't have to deal with them year round! Sometimes I miss the cold months!
Zoee, Zack, Lamar & Mateo's mom
and Khan my Pit Bull Terrier