I would never have a cat flap, had one years ago & it caused havoc. Cat caught a pidgeon one day when I was out, brought it in the house it was still alive it got away from her & was flying about the house with cat in full persuit, lamps were knocked over, ornaments smashed curtains ripped, vases of flowers smashed & water soaked carpets. & to top it all a bloody dead carcase of one pidgeon. Other times I had dead mice rats & birds brought in. So now this cat has to wait for me to come home.
jem.