https://blogfreely.net/suedeba....g91/cat-flap-fitting
Start by feeding and playing with the cat flap. This will help them become familiar with the sound of it opening and closing. It is also helpful to add your cat's scent to the flap. Next, let the flap open a little to give your cat the impression of movement. Try luring them to come through by presenting their favorite food or toy. Some herbs (such the cat germander, valerian, clarysage and clary sage) have a enticing scent that cats are known to love. Installing the cat flap A cat flap enables your pet to come and go at will,