: I have used PIC Liquid Ant Bait Killer for the first time. It is a fantastic product, within a week all ants disappered. I found a few dead ants on the floor of the shed where they had been seen. I also had them in the house as well. My question is can I expect them to return this year or next and will the bait killer keep working or will they “grow” immune to it? Thanks for a great product that works.