Fences aren't boundaries to cats and possums; they're footpaths. Straight along the top, into the neighbour's yard, up onto the shed roof, into the fruit trees, and back again whenever they like. Sharkguard™ possum and cat-deterrent spikes break that route, without hurting a single whisker.
Fit them along your fence line. Cat fence spikes and possum spikes do the same job: make the top edge uncomfortable enough that an animal chooses a different path.
Babyshark (Pest Deterrent), our low-profile, animal-safe deterrent for fence tops, rails and gate tops. Sizes and mounts to suit most residential fences, plus the backing plate accessory for surfaces that need a mounting base.
Stop Cats Using Your Fence
From the garden bed you've replanted twice to a veggie patch that the neighbourhood cat treats as its own, there's usually one habit behind it: cats walking the fence line like it's their own private track. Cat spikes on the fence top turn that habit off. It's a surface no cat wants to balance on, so it finds another way through.
Fence spikes for cats work best on shared or boundary fences, keeping visiting cats out of a particular yard rather than your own.
Possum Deterrent Spikes
Possums don't wander; they commute. A fence is often step one on a fixed nightly route to a fruit tree, a compost bin or a gap into the roof cavity. Possum spikes along the fence top break the link in that chain, so the fence stops doubling as a possum highway.
We hear this a lot from people who've lost a season of stone fruit or citrus to the same possum, night after night: fence spikes for possums on the boundary closest to the tree usually solve it. One thing to note before you fit them: possums are protected wildlife in Australia, and there are rules around how you can deter them. We cover more of the rules below.
Humane By Design
This isn't a device built to hurt any living thing. The Babyshark profile is deliberately low and compact, just enough to make a fence top an unstable and unpleasant place to walk, without the length or sharpness of our human anti-climb ranges. A cat or possum feels the surface change underfoot and looks for somewhere else to go.
No injury, trapping or chemicals involved. These are cat-repellent spikes done properly and ethically: change the behaviour, not harm the animal.
- No injury
- No trapping
- No chemicals
- Low, compact profile
Possums Are Protected: Know The Rules
Possums are native wildlife and protected under law across every Australian state and territory.
You're allowed to discourage them from using your fence or roof space, but harming, trapping, poisoning or relocating one without a permit is illegal, even on your own property.
Fence-top deterrents sit on the right side of that line, since they don't touch or trap the animal, just making one route less appealing. A possum already living in your roof is a separate problem with its own removal rules. Check your state wildlife authority for current requirements.
Where It Works & What It's Made Of
Cat and possum fence spikes are designed for fence tops, rails, capping and gate tops, and anywhere an animal would otherwise use a flat surface to travel along or climb over. Every spike is laser-cut galvanised steel, so it holds up outdoors through rain, heat and years of use without rusting or losing shape.
Got birds using the same fence line? Our bird and pigeon spikes range handles that separately.
Installation
Fitting is straightforward: the spikes mount along the top of your existing fence using standard brackets, with the backing plate available for surfaces that need a solid base. Take a look at our Measurement Guide before ordering so the length matches your fence run.
- Fits
- Fence topsRailsCappingGate tops
- Mounting
- Standard bracketsBacking plate
- Material
- Galvanised steel
If you're based in Melbourne, we also offer free installation quotes. Everywhere else, our possum and cat spike kits are built for a simple weekend fit, shipped Australia-wide.
Running a commercial site instead? Our commercial security fencing options are built for that scale, and the full Sharkguard range covers everything else in between.
Ready to Break the Habit?
Call 1800 174 275 to talk through your fence and the right fit for it, or shop the cat and possum deterrent range now.
Cat & Possum Deterrent Spikes FAQs
Do fence spikes stop cats from climbing over or walking along my fence?
Possum and cat-deterrent spikes are designed to discourage. A cat or possum can usually still get past if determined, but most stop using the fence as a regular route once the top surface is uncomfortable.
Are these humane? Will they hurt cats or possums?
No. The low-profile Babyshark design is built to deter, not injure. Animals feel the surface and move elsewhere rather than being harmed.
Are possums protected in Australia? Can I legally deter them?
Yes, they're protected, and yes, you can deter them humanely. What you can't do is trap, harm or relocate one without a permit. Check your state wildlife authority if you're unsure.
Will this keep my own cat contained in the yard?
Not reliably. For containing your own cat, a dedicated system like fence rollers or cat-proof netting is a better fit, since that's built for containment rather than deterrence.
Will it stop possums from getting to my fruit trees or roof?
In most cases, yes, provided the possum spikes cover the section of fence or structure the possum is using as its route.
What are the spikes made of? Will they rust?
Our fence spikes for cats and possums are made from laser-cut galvanised steel, chosen specifically to resist rust and hold up outdoors long-term.
How are they fixed, and do you ship Australia-wide or install in Melbourne?
They fix with standard brackets and the backing plate, where needed. We ship nationally and offer free installation quotes for properties in Melbourne.
