Hi!
I'm moving to a flat next week, my cat always goes outside when she needs
the loo, but in my new flat there isn't a garden or any way for her to
easily access outside without me carrying her down. I want to get a litter
tray for her and was wondering how hard it would be for her to use it? Will
she instantly know what to do with it? She had one when she was a kitten,
but that was over 3 years ago, so she's probably forgotten about it.

Also, how long do I need to keep her in the new house before I can safely
start taking her outside, I don't want her to run away!

Any help would be appreciated, thanks!