This poor guy spent hours trying to do something nice for his cat, Philo, by installing a cat door. Philo, however, could care less about all the hard work his dad put in for him.
Watch below what Philo does when he goes up to the door and just lifts himself up to use the actual door handle to open it.
Maybe Dad should invest in just locking the door and Philo will have no choice but to use the cat door.