ditto that
Had the same problem years ago when I still lived at home with the folks. We were fortunate that the cat flap was in the dining room and could be closed off to the house. So, we set it to 'In Only', shut the door and waited.

In no time at all, a filthy manky thing came wandering in and started making a racket when it discovered it had nowhere to go. We loaded up three squirty bottles with water, and each took great pleasure in giving it the soaking of its life. First time I'd seen a cat climb curtains. We let it out (with a firm kick) and laughed as it was too fat and soaked to climb the 6' fence to escape the garden, becoming a prime target for more squrity water action.

It never came back and my kitty was very happy about it (or didn't care, it was hard to tell).
( fluffymitten NAN, Fri 30 Apr 2010, 12:27, Reply)