https://yamcode.com/how-to-tra....in-your-cat-to-use-a
Introduce your cat to the flap before it's installed so they can become familiar with the size and shape. Open the flap and let your cat explore it from every angle. Make sure the cutout is even and square. Mark the screw holes on your door and align them with the cat flap opening - the distance between the edges should be the same. Preparation Installing a cat-proof flap in your home is beneficial for the health and well-being of your pet. It allows your pet to move from inside to the outside without you needing to allow