We inherited a cat about a year ago and generally she's been fine. She used to go outside to poo and wee through the cat flap but in rain and cold weather she pood in corners in our upstairs bedrooms so we put in a litter tray. She now uses the litter tray all the time and won't go outside to do it. Thing is, we're about to move house and really have had enough of the litter tray. Is there any way to get her to go outside to do her business again (once we move) or have we had it now? Thanks for suggestions in advance.