Cat people please advise - we have a kitten who has just started to go outside. I'm sure at this point our previous cats just decided to stop using the litter tray and do their cat business in the garden instead. This one though has not made the transition by herself - what's the best way to help encourage her? I tried mixing in a bit of soil with the litter to get her used to a different feel and smell but she wouldn't use it, I might have used too much though. Any suggestions or tips that worked for you gratefully received.