https://informatic.wiki/wiki/H....ow_to_Train_Your_Cat
If you have a cat or dog, installing a pet flap in your French or patio doors is a great idea. It makes it easier for them to get in and out without needing to open the door. There are a variety of cat flaps available that are made to fit into uPVC, composite, or wooden doors. Some even come with a four-way locking system that can be set to leave only by entering only, or open. Installation Cat flaps are an excellent way to let your cat in and out of your home without having to open the front door every time. This is