Well have shut the cat flap (one way), so terrible twins can't get in but Charlie can get out. OK in the day as I can let Charlie in but last night (he is an old cat) went out for a pee and got locked out all night. Looked so upset this morning sitting on the step and now he is frightened to use the cat flap. Think I may have to put a cat litter tray down or stay up all night opening and shutting the door and standing guard with my water pistol. I don't understand that if the lady who owns them and loves them so much and says her cat flap is open all day why they never go home, blue collar was asleep in my plastic Argos greenhouse, I leave the door of the greenhouse open, seems to stop it blowing away in the wind. If my cat was missing for a day I would knock on all the doors to find him and she hasn't bothered once. I don't want it in as it keeps scratching and had a flea problem once before and don't want that again and Charlie has frontline on and can't really frontline her cat without permission, so sorry cat but you will have to sleep rough. Can see it a problem in the summer when I want my back door open. The water pistol is quite effective and only have to pick it up, not spray them with water, will progress to the garden hose soon. That cat has very good hearing as when I put some washing on the line it is there in a flash, I don't mind shutting it out tonight as it is not raining and there are no fireworks.