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Installing a cat flap the door will allow your pet to come or go whenever it wants. Follow these steps to learn how to draw the shape, use the jigsaw or hole saw to cut it, and then install your cat flap. You can keep wild animals, pests and stray cats from gaining access to your cat flap if it has a Manual Four-Way Lock. You can also keep a few pots for your cat to hide in. Placement A cat flap can be used to keep animals from entering like rodents and cats. Some models allow you to close them so that