M.M.
OMG we have this problem and it's maddening!
I even found one crawling on my baby daughter's face!
I have Raid ant traps all over the the house, which has helped some. I also have Orkin come. I don't want ot spray anything more, since the baby is on the floor all the time.
I'll be watching this to see if anyone else has better suggestions. I feel so gross that I can't get rid of them!