4-9 mm – Red-brown and black
Insect – Moderate risk
Red ant
The red ant (Formica rufa) can be recognized by its two-tone red-brown and black coloration. It builds imposing dome-shaped nests of twigs and pine needles. It can be aggressive, spraying formic acid when attacked.
§1Distinctive features
How to identify it
The red ant measures 4 to 9 mm depending on the caste. Red-brown head and thorax with black abdomen. It can project formic acid several centimetres.
§2Habitat
Where to find it
It builds its nests in woods and forests, sometimes close to dwellings. Dome-shaped nests can reach a meter in height.
§3Reproduction
Lifecycle
Without intervention, an infestation can double in size in just a few weeks.
§4What to look out for
Signs of infestation
- Large domed nest in the garden or on the edge of the forest
- Intense ant activity around the nest
- Painful bites if you approach the nest
- Formic acid spray (pungent odour)
§5Why act fast
Risks
- Painful bites and splashes of formic acid can irritate the skin
- Damage to terraces and gardens if the nest is poorly placed
- Possible allergic reactions in sensitive individuals
§6Prevention
How to avoid it
- Keep an eye on the periphery in spring
- Keep piles of wood and plant debris away from foundations
- Contact a professional if the nest is too close to the house
- Do not disturb unprotected nests
§7Pro method
How MW works
Inspection
Home location and assessment.
Preparation
Customized plan – pre-intervention measurements.
Treatment
Locate main and satellite nests, treat with non-repellent baits.
Follow-up
Inspection visit – written guarantee.
§8We answer you
Frequently asked questions
Is it dangerous?
It can bite and spray formic acid. Stings are painful but rarely serious, except in cases of allergy.
Should all nests be destroyed?
Not necessarily – the red ant is useful in the forest. Only threatening nests near dwellings require intervention.
How can I protect myself?
Wear boots, gloves and long clothing. Move away quickly if ants become aggressive.
React quickly, sleep well.
The longer the infestation lasts, the more expensive it becomes.