Apr 09, 2015 - 10:52 AM
This is a security measure - built in - for colony survival. What usually happens is that the workers and most of the ants die and the Queens and reproductives starve. This is the classic starvation technique that is disquised in many marketing materials as "fed directly to the queens".
Again, it depends on the species of ants.
I would highly recommend to give Advion a try. It's an excellent bait, and is has exceptional bait acceptance by most species of ants. If it doesn't work, let me know.