Does it actually work as good as it looks? We clearly need a cat flap as one of the Scaredy cats is in fact a hormonal teenager in disguise (she's spayed!) and looks at us with the disdain that only a teenager can express to old fashioned embarrassing parents if we try to keep her in.
So cat flap it is. And I love an app and the ability to control it remotely if we stay out later or whatever.