https://yogaasanas.science/wiki/Fitting_a_Cat_Flap
Install an animal flap if you want your pet to come and go whenever they like without having to open the front door. It is recommended to hire an expert to install the flap. They are able to handle the complexity of putting in different types of cat flaps to different walls and doors. Installation With a cat flap, your pet is able to enter and out of the house at will, without needing to open the door. The variety of pet flaps available on the market is extensive, ranging from microchip-proof and bite-proof doors to fully insulated cat