I had this problem just the other day! I'm in Orange County so I can tell you that the ants are hell right now.
The ants first attacked my adult leo se up anda themalworm colony nearby. A majority went after the mealworms which left a few after the adults. I threw out the mealies, bleached down the pheremone trails (killing the ants too), then wiped an incecticide around the window with a cloth.
Everything was fine for one day.
They came back the day after that and attacked my hatchlings.My albino(two weeks old) was getting swarmed pretty bad and I panicked, so I ran her into the bathroom and washed the ants off her. Her little toe on one foot was pretty red and looked broken, her tail was a little bit red, but didn't look anywhere near as bad as the toe, I cleaned her up and put her in a clean cage. My baby blizzard (about a week old) was smart. The swarm in her cage was even worse, but she was hiding in her water dish and thus the ants couldn't get her.
Once again, bleach and bugspray. Next day, went to the local pet store and found out they had the same problem. The exterminator they use reccomended a poison for the ants. MaxForce Ant Killer Bait Gel.He had lost 15 newly born chams to an ant army. I bought a tube of it from him and went home.
Luckily, the ants weren't after my geckos cause I moved them from their shelf. They were after the cat food I left out 3 hours earlier. Thus the entire swarm started chowing down on the insecticide and 7 hours later either tottered back to the nest, or started dying. I always feed my cat in the same spot, and I haven't seen any ants since then so I think the whole colony was wiped out.
My baby blizzard is fine after the ordeal, the albino had dropped her tail sometime during the day and died while I was out.Don't let this happen to you.