Lasius niger colonies can reach in size up to around 15,000 workers but 4,000–7,000 is around average. A Lasius niger queen can live for around 12 years. Lasius niger is host to a number of temporary social parasites of the Lasius mixtus group including Lasius mixtus and Lasius umbratus.
In the home
Black garden ants often explore their surroundings quite extensively during early summer months in an effort to increase the food supply to their queen and her young, and also as a way of testing new ground in preparation for the nests' summer flight. In some cases, these explorations lead to a burrowing through mortar and brick.
Ants nests are usually treated by dusting/spraying insecticide into the nest and around the entrance.
Specific indoor sprays can also be used for controlling ants in localised areas.
Signs of Ants
Ants themselves (alive or dead)
- Garden Ants £99
- Pharoah Ants - POA
- High risk areas sprayed