How to Get Rid of Martens: Car, Loft & Garden Guide (2026)

How to tell that a marten has moved in

Servus from Tyrol! You almost never see martens — you hear them, smell them and find what they leave behind. These are the four surest signs:

1. Noises at night

Thumping, pattering, scratching and rumbling above the ceiling, almost always between 22:00 and 5:00. Martens sound a good deal bigger than they are — many people first suspect a cat or a burglar. Important: stone martens are loners. If you hear several animals, it is very probably a mother with young. Exactly which animal is living above you is cleared up in our noise guide for the loft.

2. Tracks and damage

Paw prints with five toes on dusty surfaces or on the bonnet, scratch marks on the downpipe and the façade, insulation wool that has been churned up or flattened, feathers and remains of prey in the roof space.

3. Droppings in fixed spots

Marten droppings are 8–10 cm long, sausage-shaped, often twisted and smell pungent. Martens set up proper latrines — always the same spot. Not sure it wasn't a rodent after all? Then Identifying marten droppings: what they look like helps you tell them apart — and for mixed finds there is the overview Identifying droppings in the loft.

4. Suspicious signs on the car

Paw prints on the bonnet or windscreen, insulation wool dragged around the engine bay, nibbled cable insulation or misfires after a night parked outdoors.

Getting rid of martens: the three levels

The most common mistake is working on one level only. If you just put up a device but leave the scent marks, you are fighting against the smell. If you just clean but secure nothing, you have the same marten back in three weeks. It takes all three:

1. Remove the scent. A marten's territory is a scent map. As long as it can be read, the place stays attractive — for this one and for every successor. Enzyme cleaner breaks the markers down; perfume only covers them up.
2. Make access unattractive. Don't seal straight away — disturb first. Light, movement, changing stimuli. A marten gives up a den when it becomes unsettled — not when it becomes cramped.
3. Stick with it. Loyalty to its territory is this animal's superpower. It tests for weeks whether the spot is free again. If you take the deterrent down after ten days, you invite it back.

Deterring martens — what's allowed and what works

‘Deterring’ (in German: vergrämen) is not officialese but the term that decides everything legally. Trapping and killing count as hunting and are a matter for those who hold the hunting rights. Deterring — making the place so unpleasant that the animal leaves of its own accord — is open to everyone. And it is in any case the only method that solves the underlying problem: an animal that has been removed leaves a vacant territory, and within weeks the next one moves in.

What really counts when deterring

• The stimulus has to change. Constant frequencies, permanent light or a radio left running are background noise after two to three weeks.
• The stimulus has to be where the animal is. A device in the hallway is no use if the marten gets in via the roof verge.
• The order has to be right. Deter first, then seal — never the other way round.
• It takes patience. Reckon on one to three weeks, not one night.

How the first nights go in practice is set out further down in the 7-day plan against the marten.

Getting rid of martens in the roof & in the loft: what to do?

For the house there is one iron rule that is ignored all the time: Deter first, then seal. If you simply close every hole, in the worst case you lock an animal in or separate a mother from her young. That is not just an animal-welfare problem — it ends with desperate attempts to break out or a dead animal in the insulation. You do not want to get to know that smell.

1. Find the entry point. Watch the roof at dusk; martens leave their den shortly after sunset. Test suspicious spots with the paper-ball trick: plug the opening loosely with newspaper. If it gets pushed out, the spot is in use. Gaps the size of a fist are enough.
2. Check for young. If you hear high-pitched squeaking, there are young involved — then the special case in the next section applies. Don't seal, only deter.
3. Neutralise the scent marks. Remove droppings and remains of prey wearing gloves, treat latrines with enzyme cleaner.
4. Deter. Now for the actual eviction: light, disturbance and above all changing signals. An IREPELL® in the roof space runs on its battery or the mains adapter, is silent to humans and works all night long.
5. Check that it has moved out. Repeat the paper-ball test. If the opening stays untouched for several nights and it is quiet above the ceiling, the animal is out.
6. Only now seal. Secure entry points with galvanised wire mesh — the mesh size has to be well under 5 cm, otherwise the animal slips through. Take the edge off climbing aids: fit downpipe collars, cut back branches close to the roof.

Marten protection on the downpipe: the underestimated climbing route

To a marten, a rainwater downpipe is a ladder with a handrail. In most of the roof cases that end up on the phone with us, the downpipe was the way up — that is a figure from our advisory experience, not a statistic. The solution is simple: a smooth collar of sheet metal or plastic, about a metre long, fitted high enough that the marten can't jump over it from below. On top of that, cut back branches, trellises and espaliers that come closer than about two metres to the roof — martens jump astonishingly far. The order stays important: only block climbing routes once the animal is definitely out.

You'll find the detailed loft plan with all the methods here: Getting rid of martens in the loft — the 15 most effective methods. Step by step from the first noise to the last piece of mesh: Getting rid of martens in the loft. How to make the house properly tight afterwards is set out in the complete guide: making your house marten-proof. And if the rumbling is downstairs rather than upstairs: Martens in the cellar.

Special case: martens with young

This is the point where most guides become too vague — yet it decides whether you commit an offence or not. Stone martens usually give birth to their young in spring, and the animals stay in the den for several weeks before they become mobile. During this time the following applies:

• Parent animals must not be separated from their young. That is not a piece of good advice but anchored in the hunting and animal-welfare regulations. If you shut the mother out while the young are inside, you cause an agonising death — and later you have the smell of it in the house as well.
• Closed seasons and breeding seasons are a regional matter. In Germany the hunting laws of the federal states govern the details, likewise in Austria, and in Switzerland the cantons. The exact periods differ — if you want to be on the safe side, ask the responsible hunting authority or the local holder of the hunting ground. Blanket dates from internet articles are no use here.
• Deterring remains permitted even then. And it is the elegant route: once the den becomes unsettled, the mother carries her young to an alternative den of her own accord. That is exactly what changing stimuli are made for — they force nobody, they persuade.
• Only seal after they have moved out. And really only then. Several quiet nights plus an untouched paper-ball test are the minimum before any mesh goes up.

Getting rid of martens in the car: why the engine bay becomes a trap

To a marten, your engine bay is a five-star hotel: warm, dry, sheltered — and after one night it smells of its territory. The real problem, though, is not the overnight stay. It is the rival.

If you park somewhere else during the day and a second marten leaves its scent mark, things escalate: the following night the resident bites through everything that smells of the stranger. Ignition leads, coolant hoses, rubber boots, insulation mats. For 2024 the GDV puts the figure at around 252,000 such claims on cars with comprehensive cover in Germany alone — and expressly points out that vehicles parked alternately in the territories of different animals are particularly at risk.

What really helps with the car — in this order

1. Have the engine washed. The first step: it removes the scent marks that drive rivals into a biting frenzy.
2. Secure the parking spot — don't wait until the engine bay. An IREPELL® stands next to the car, in the garage, carport or driveway. Its sensors detect the approach and it deters before the marten slips under the car. The device runs on its battery and simply comes along: on holiday, to the second parking space, to the spot at Grandma's.
3. Protect vulnerable lines. Corrugated cable conduit costs little and gives the bite nothing to get hold of.
4. Wire mesh as an inexpensive extra. Martens don't like wobbly, rattling ground — but the mesh only helps at this one parking spot and stays at home when you drive off.

One device for the parking spot, the garage and on the road

Our recommendation for the car: put an IREPELL®.one next to the vehicle — and take it with you when needed. Try it for 30 days; if you're not happy, you get your money back.

See IREPELL®.one for the car · 269 € Free shipping · 30-day money-back · 2-year warranty

You'll find the complete step-by-step plan just for the car here: Getting rid of martens at the car: what really helps in 2026. Why the marten bites cables in the first place is explained in this background article. For garage and carport in particular: What works where. If you drive electric, first read Martens and electric cars: protecting high-voltage cables.

Getting rid of martens in the garden

In the garden the marten is rarely the real problem — it is passing through. Stone martens walk fixed routes every night: compost, chicken coop, woodpile, garden shed, and from there onto the roof or under the car. If you stop it in the garden, you protect the house and the car at the same time.

What attracts it — and what you can change today

• Food: cat food on the patio, windfall fruit, open compost with food scraps, bird food on the ground, eggs in an unsecured coop.
• Hiding places: woodpiles against the house wall, a garden shed with a gap under the door, dense ivy on the façade.
• Climbing aids: branches close to the roof, trellises, downpipes without a collar.

What works in the garden

1. Clear food sources away in the evening. Costs nothing and takes away half of the territory's value.
2. Make the coop and the garden shed really tight. Spot-welded aviary mesh instead of chicken wire, bolts instead of hooks — a marten opens more than you'd give it credit for.
3. Cover the route. A repeller belongs where the marten walks: between hedge and house, by the coop, at the corner of the garage. Outdoors an IREPELL® covers up to 250 m², and on battery it does so even where no cable reaches.

All the details with example site plans: Getting rid of martens in the garden — the honest guide and Marten defence in the garden: solar or something proper?. If you keep hens, Securing the chicken coop against marten & fox is required reading — and if the fox is more likely the culprit, our fox guide will help you further.

What marten damage costs — and who covers it

The sober sums help you decide how much effort is appropriate. For 2024 the GDV reports claims payments of 157 million euros for around 252,000 claims — arithmetically a good 600 euros per case. But that is only the average across all claims.

On insurance: Third-party motor liability insurance alone does not cover marten bites on your own car — for that you need partial or fully comprehensive cover (Teilkasko or Vollkasko). And there it pays to look at the small print: some policies only replace the parts that were bitten directly, others the consequential damage too. Exactly this difference decides whether you pay out of your own pocket for an overheated engine. We have untangled the details here: Marten damage to the car — costs, insurance & protection. What destroyed roof insulation costs is set out in Marten damage to insulation; if you rent, you'll find who is responsible under Tenant or landlord — who pays?

Home remedies and smells — where you can read up on them

On the question of which smell drives martens away and what vinegar, mothballs or dog hair really achieve, we have written separate articles — with an honest practical check of every single remedy. Here it would only bloat the plan.

• Getting rid of martens with vinegar — does it really work? · the classic in a practical check, plus which smells martens really do avoid
• Home remedies against martens · all the common remedies assessed one by one
• Which smell do martens dislike? · all the scents honestly put to the test

Getting rid of martens with ultrasound: does it work?

Honest answer: it depends on the device — and on what you expect. Martens hear far into the ultrasonic range, and high tones are unpleasant to them. Where most devices fail is not the physics but the monotony: one fixed tone, around the clock, always the same. After two or three weeks that is about as threatening to a marten as the hum of a fridge.

The honest limits

• Ultrasound does not pass through walls. Insulation wool, cardboard boxes and masonry swallow it. The device has to stand in the same room as the animal.
• It is no substitute for sealing. An open entry point remains an invitation to the next marten.
• It does not erase scent marks. Clean first, then deter.
• It rarely works on the first night. One to three weeks is realistic.

How to recognise a usable device

• changing frequencies and patterns instead of a continuous tone
• motion detection — the stimulus comes when the animal comes
• a second stimulus alongside the sound, such as strobe light
• a power supply that suits the location: battery for loft and carport

We built IREPELL® along exactly these four points — more on that further down. You can read the detailed fact check under Ultrasound against martens: does it really work?

What helps against martens? All methods compared

No points system, no invented test scores — just the properties in which the methods really differ:

How spray, high voltage and ultrasound fare in a direct practical test — including costs and how long the effect lasts — is set out in the big marten test 2026. Which device is the best choice for which situation is covered in the device comparison 2026. How ultrasound and scent spray measure up head to head is shown in this direct comparison. And when a call to the professional is worthwhile: Pest controller against martens — yes or no?

What's allowed? The legal position in DE, AT & CH

In the legal sense the stone marten is not a pest but a wild animal — and it is covered by hunting law. Specifically:

• Germany: Trapping and killing are hunting and are not permitted without the right to hunt (Federal Hunting Act, Bundesjagdgesetz); in addition, closed seasons apply, which are set by the federal states. Relocating trapped animals is not permitted for private individuals either.
• Austria: The hunting laws of the federal provinces regulate it in a similar way — trapping and shooting are a matter for those who hold the hunting rights, and the rules vary from province to province.
• Switzerland: The stone marten may be hunted; the cantons regulate the details. For private individuals: hands off traps and poison.

Expressly permitted everywhere, on the other hand: deterring, shutting out and making your own property unattractive. That is exactly why deterring is not only the most animal-friendly route but also the only one that is legally safe across the board for private households. The long version is in Getting rid of martens and the law. Whether and when devices can clash with the law on neighbours is cleared up in this article on the law and noise nuisance.

Your 7-day plan against the marten

1. Day 1–2 · Diagnosis: keep a noise log (time, place), look for tracks and droppings, locate entry points, check the engine bay for bite marks.
2. Day 2–3 · The big clean: engine wash for the car; in the roof, remove droppings and remains of prey (gloves) and neutralise latrines with enzyme cleaner.
3. Day 3 · Set up the deterrent: place the device centrally in the roof space or at the parking spot, select the ‘Marten’ profile, activate motion detection.
4. Day 4–6 · Observe: paper-ball test at the entry points, document noises, check activity in the app.
5. Day 7 · Seal: confirmed quiet? Close entry points with fine-mesh wire, fit downpipe collars, take the edge off climbing routes.
6. Afterwards · Stick with it: leave the protection active. Martens test for weeks whether the territory is free again. Especially in the cold season — why is explained in Martens in winter.