Invasion

The invasion has begun and I'm on a mission of destruction. The other day some ants invaded the master bathroom. I got rid of them and hoped that would be that. The next morning as Lucas was using the kids' bathroom he yelled that he was surrounded by ants... they hadn't gone, just moved. Ants in my house are one of my worst nightmares. The kids don't bring food into their rooms and I try to keep things pretty clean by dusting and vacuuming regularly -- apparently, the ants don't care. They want in.

I called my Orkin guy because we have a service every two months around the outside of the house to keep ants and spiders at a minimum. The guy came out this morning and took care of the problem in the bathroom. About an hour ago I went to put the kids down for a nap. I decided to lie down with them for a bit because I was damn tired. A few minutes into naptime, I heard son saying, "I see ants!" I looked up and sure enough, there were hundreds of critters trailing all along the baseboards. I quickly shooed the kids into my room and I tried to get a handle on the situation.
Of course, since this is the kids' room, I don't want to fill it with Raid. I filled a bottle up with vinegar and sprayed all over. They were under the mattresses, along the wall, climbing on the bookcase... everywhere. Help!
After soaking them with vinegar, I sprinkled all around with baking soda. I'm not sure what else to do that is natural. I will wait for everything to dry and then vacuum and dump the vacuum bag. If they keep coming back I'm going to abandon the house and move in with my mom:) The thought of an ant climbing on my precious child while he is sleeping is more than I can bear.

Anyone get rid of ants indoors without using chemicals? I don't mind spraying that stuff outside, but inside... I'm a little leery.