I have tried the liquid terro stuff and found you will have a trail of ants visiting it and then it slows but never gets rid of them. I have even put a new 2nd bait down after they consumed all the liquid out of the first one. Tried Amdro ant block and they investigate it then walk away and avoid it. Ant powder/dust works if they walk in it but avoid it otherwise. I have heard that boric acid powder mixed with something the ants like works but haven't tried it yet. Windex works well to kill them.