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To encourage your cat to use the flap, begin by playing and feeding near it. This will help them become familiar with the sound it makes when it opens and closes. It is also helpful to add your cat's scent to the flap. Next, open the flap a bit to give your cat a sense of movement. Try to lure them in by grabbing their favorite food or a toy. Some plants (such a cat germander valerian, clarysage and clary sage) are enticing in scent that many cats enjoy. Installing the cat flap A cat flap allows your pet to come and go whenever it wants without you