I have two DS's and no pets. There is a cat that keeps trying to get into our house. She is always in the back garden (the poo drives me mad). Twice I have left the back door open while DS1 was playing in the garden and have found her sitting on the kitchen table - there was no food on it at the time. She seems friendly and is usually meows at me. I haven't stroked it or encouraged it to come back and don't want to have to close door when DS is playing in garden. She is often sitting on window sill and trying to jump in open windows. If anyone knows of anything I can do to discourage this behaviour it would be greatly appreciated. She has no collar on but looks well looked after.