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A cat flap allows your pet to leave and enter the house at his own pace, reducing stress for both you and your pet. Installing a cat flap can be a daunting task. The most important factor to success is preparation and consideration. Gather your tools and materials. Note the exact location of your flap on the door or wall. Location A cat flap lets your pet go outside to explore, eat, and play without having to open or close the door every time. It also lets your cat access their food bowl and litter box, which helps to prevent them