Hi all first post on the litter tray so go easy on me 
We recently moved house, our cats used to go out all the time and were trained to poo outside from when they were kittens
Since we moved we have not been able to get them to poo outside. We kept them in for two weeks, they are settled now, they do go outside, but come back in to use the litter tray! I've tried moving the litter tray out this morning, which seems to be helping but not much!
Any tips to get them doing their business outside again? I'm so sick of coming down in the morning to a stinky house and cat litter absolutely everywhere (how do they do that!!)
Thanks!