Have you ever found a strange cat in your living room in the middle of the night?
The unexpected entry of a strange cat through the cat flap can be very stressful for you and your own cats.
To prevent strange cats from entering, you can install special electronic cat flaps that only detect your own cat, or install physical barriers such as nets and bars.
In this article, you will learn why strange cats use your cat flap, what methods there are to ward them off, and what to do if a strange cat is already in your house.
Why do strange cats use your cat flap?

Strange cats are naturally curious and eager to explore. This curiosity often drives them to explore unknown places. Your cat flap offers them easy access to enter a new area. There can be various reasons for this:
- Curiosity : You want to explore new places.
- Foraging for food : When you feed your cat, the smell can attract other cats.
- Search for company : Some cats seek proximity to people or other animals.
In addition to curiosity and foraging, there are also territorial reasons why strange cats use your cat flap. Cats are territorial animals and sometimes they use the cat flap to expand or defend their own territory. This leads to them returning regularly, which can be stressful for your own cat. Here are some territorial motives:
- Marking territory : Strange cats can use your cat flap to get into your home and mark there.
- Competition : They may want to be the dominant cat in the area.
Methods for repelling strange cats at the cat flap

There are various methods that have proven effective in practice to effectively block access for strange cats through the cat flap. One of the simplest and most effective solutions is to install an electronic cat flap. This recognizes your cat using a chip or a special collar tag and only opens for it. This prevents strange cats or other unwanted animals from entering your home.
In addition to electronic cat flaps, physical barriers such as special nets or grilles can also be installed that block access without restricting your cat's freedom of movement. Such solutions are particularly useful if you are looking for a simple but effective method of securing your home. Regular inspection and maintenance of these barriers is important to ensure their effectiveness and to make adjustments if necessary.
Barriers against strange cats at the cat flap

One of the most common barriers to preventing strange cats from entering through the cat flap is netting or mesh. These can be attached directly to the cat flap or to the frame of the door. They provide a physical barrier that makes it difficult for strange cats to enter your home without affecting your own cat's freedom of movement. It is important to choose materials that are robust enough to offer resistance, but still safe for all animals.
When installing netting or screens, make sure there are no sharp edges or pointy corners that could harm your cat or other animals. Regular inspection and maintenance of these barriers is crucial to ensure their functionality and that they do not pose a threat to wildlife. Proper installation and maintenance of these barriers will go a long way in keeping out unwanted guests while still allowing your cat access to their familiar environment.
What to do if there is a strange cat in the house?
If you discover that a strange cat has entered your home through the cat flap, it is important to remain calm and not make the situation worse. Speak in a gentle voice to calm the cat and move slowly so that it does not feel threatened. Open doors or windows to provide an escape route and place some food or water near the exit to entice it there.
Do not try to forcefully catch or corner the cat. Give it the opportunity to move at its own pace and decide when to leave. If the cat is particularly anxious and hiding, it is important to be patient. Give it space and time to feel safe and try to make the environment calming by playing soft music or dimming the lights.
Catching a regularly invading foreign cat
If you notice that a strange cat is regularly entering your cat flap, trapping it may be a solution to solve the problem. It is important to do this safely and humanely. One effective method is to use a live trap. Place the trap close to the cat flap and use bait that is attractive to cats, such as:
- Fresh cat food
- tuna
- A small toy filled with catnip
Before setting the trap, make sure it is safe for the cat and does not pose a risk of injury. After the strange cat is caught, check to see if it is wearing a collar with contact information, which could indicate that it is missing. Contact local animal shelters or rescue organizations to see if anyone is looking for the cat or for help with further care. It is important to be patient and cautious during this process to ensure the cat's well-being.
Frequently Asked Questions
How can you prevent other cats from coming through the cat flap?
To prevent strange cats from coming through the cat flap, you can install electronic cat flaps that only recognize your own cat. These work with a chip or a special collar tag. Alternatively, you can also install physical barriers such as special nets or grilles that block access without restricting your cat's freedom of movement.
How do I get rid of a strange cat?
If a strange cat has entered your home through the cat flap, you should remain calm and try to gently reassure the cat. Open doors or windows to give it an escape route and place some food or water near the exit to lure it there. Do not try to catch the cat by force or corner it, but give it space and time to feel safe.
What should I do if a strange cat always wants to come to me?
If a strange cat regularly enters your cat flap, you can try catching it with a live trap. Use bait such as fresh cat food or tuna and make sure the trap is secure. After the cat is caught, check that it is wearing a collar with contact information and contact local animal shelters or animal welfare organizations for further assistance.
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Cat flap for strange cats: preventing entry