The Black Ant is the only indigenous British species that commonly enters homes.
Nests are typically found within soil but it is not uncommon for these to be under paving slabs and concreted areas. The Queen of the nest has wings which are lost once mating has taken place and her eggs once laid, are tended to and fed by the worker ants of the nest.
Ant infestations can be a real nuisance especially when in or on the perimeter of a property as the ants will forage every area in search of sugary food sources.
The Pharoah Ant is originally from tropical areas but will survive in centrally heated buildings of cooler climates. Unlike the Black Ant the Pharoah Ant colonies are highly mobile and have multiple queens within the nest. This particular ant has caused problems in buildings such as hospitals and food factories as it favours these warm and humid conditions.