[Pendle Portraits]

The thing to remember about ants is that when they go foraging, they leave a pheremone trail that they follow back home, and since at any one time there are probably many ants out foraging, they can turn up again after most of the nest is destroyed. If the queen is still alive they'll rebuild the nest so it's important to make sure the nest is completely destroyed and that the surrounding area of the nest is thoroughly cleaned to get rid of the pheremone trails.

The nest can actualy be completely destroyed without using any chemicals or poisons (not good if you have pets or small children) by simply pouring boiling water on it. This also causes any eggs to 'pop'.