Thing is you need to kill the qween otherwise she yust keeps laying eggs and you get more ants .
We have cats and can`t (don`t want to use ) pesticides .
I have good results yust following them to find the nest (where the qween is) and pouring in bouling water (this kils the qween ) .
Even bettter if you have one of these steam cleaners yust steam the nest

.
Its eazy cheap and ecologiqly friendly .