Black garden ant (Lasius niger)
The black garden ant is the most common ant species in Finland. It does not cause structural damage, but its presence in the kitchen, pantry, or living areas is unpleasant and usually indicates a nest is too close to the home.
Identification
The black garden ant is small (4–5 mm), black, and moves in lines in search of sweet food.
Habits
The black garden ant:
- enters buildings especially in spring and summer
- searches for sweet foods like sugar, honey, and juice
- follows scent trails in groups
- nests commonly in paving cracks, near building foundations, or close to wall structures
Ants can enter through tiny gaps and form trails of hundreds across kitchen surfaces, floors, and cabinets.
Control
If black ants are found indoors, professional pest control is recommended.
A professional will:
- locate the nest and identify ant trails
- use effective methods to eliminate the infestation
- treat external structures to destroy outdoor nests
- provide advice for prevention and sealing entry points
DIY methods may temporarily reduce the problem, but rarely eliminate the nest – professional treatment is often the best solution.
Summary:
Black garden ants are a common nuisance, especially in kitchens and living areas during spring and summer. They enter homes in search of sweets and may form visible trails. While they don’t damage structures, their continuous presence is unpleasant and may indicate a nest nearby. The most effective solution is professional pest control targeting both the ants and their nests, inside and out.
Pest control visits from 149€