The Black garden ant is to be found throughout the UK, particluarly where soil is of a sandy nature. It is common around homes and the workplace, the worker ants entering through cracks in brickwork and around windows in search of food.
These ants follow trails, so when a rich source of food is found, this information is communicated back to the nest resulting in large numbers of ants following a trail from the nest back to the food source. Nest openings can be distinguished by small piles of fine earth.
Although not known to carry any diseases, most people would rather discard than use food which has been fed on by ants.