I had a lot of those motels out, and for MONTHS... We never saw any reduction in the indoor ant population . Sounds like a good idea to put something additional inside the motels as a couple of you mentioned as an attractant. Otherwise they seem to ignore it and just walk around it, not inside.
I think there are LOTS of colonies around here. I was petsitting neighbors dogs, and they had ants too. With so many colonies and queens, it's practically impossible to permanently erradicate! I'll just be happy if they stay away for a month at a time. I think I'll TRY and guess where their port of entry might be, and start with the gel, backed up with motels...
What is it about grits that keep them from coming back?!
You can Invest in an ant eater....I hear they make good pets.