https://botdb.win/wiki/How_to_....Train_Your_Cat_to_Us
https://selfless.wiki/wiki/Cat...._Flap_Installation_C
It may seem difficult to install a cat flap however, with the proper instructions, it's not too difficult. Firstly, determine how high you want the cat flap to be (on average, belly height). Then, mark this area on the door and use the template included as a guide to drill. If you have a kitten, or a young kitten hold the door open a bit and gradually encourage it to go through. Reward it each time it goes through. Take a measurement of the door A cat flap allows y