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Start by feeding them and playing near the cat flap. This will make them comfortable with the sound of it opening and closing. You can also add the scent of your cat to the flap. Next you should open the flap a little to give your cat the impression of movement. Try to lure them in by grabbing their favorite food or toys. Some plants (such a cat germander valerian, clary sage and clary sage) are attractive scents that many cats enjoy. Installing the flap for cats A cat flap enables your pet to come and go as it pleases