Martens: behaviour and control methods
A charming animal with a white collar and intelligent expression: the marten. The marten belongs to the mustelid family and typically inhabits rocky crevices. However, in densely populated areas, martens often settle in ruins and even cemeteries, coexisting closely with humans—usually not to people’s great delight.
Martens regularly cause damage to cables and insulation material in vehicles, a frequent complaint in Belgium and the Netherlands. These animals crawl under car hoods seeking warmth or food, chewing cables, hoses, and plastic parts, which can lead to expensive repairs. These incidents often peak in late spring, when young stone martens do not yet know the difference between edible and inedible food.
They also prey on chickens and other birds, so poultry houses should always be secured with fine mesh netting.
Martens possess an excellent sense of smell, surprisingly helpful in repelling them. Strongly scented items and plants are effective deterrents. Martens dislike dogs, making dog hair a reliable repellent. They also dislike the scent of spurflower (Plectranthus coleoides), vinegar, and pepper.
Universal repellents include toilet blocks with strong fragrances like ocean or lemon, which can be easily hung under a car’s hood to prevent damage. Experts recommend regularly changing these scents to avoid habituation.
Sprays specifically designed to repel animals are also effective but require frequent reapplication. Ultrasonic devices emitting sounds unpleasant to martens but inaudible to humans can work effectively. However, the downside is that pets may also hear these sounds, causing them discomfort.
Despite the inconvenience, martens play a crucial role in controlling mouse and insect populations. Historically, martens were even domesticated to protect homes from mice before cats took over this role. Interestingly, the famous painting “Lady with an Ermine” may actually depict a marten. Moreover, martens are legally protected in both the Netherlands and Belgium.
In the Netherlands
The stone marten is protected, and its population is growing. Originally concentrated in the east, it has now spread to other regions. Since 2018, Friesland province has allowed limited hunting and trapping of stone martens in certain areas.
In Belgium
The stone marten is protected in Belgium. Even trapping and relocating them is prohibited, though this is sometimes requested. If a marten settles in a building or other property, the only preventive measure is to modify the structure to block further access to essential spaces.
