We have always used Grants Ant Stakes with quick success, but, like many of the other reviewers, we're not happy with the new formulation. The ants had found some plants in the master bathroom that they liked, so we put down a fresh stake in their path which they quickly found and liked. We've had a steady stream of them marching to the bait for at least a week! We added a second bait stake next to the first and they've been going to both of them. It's not stopping. Clearly, these guys like the new formulation, but we don't.