The vets told me my cats have Haws syndrome, luckily i think we are coming to the end of it now. It started off with one of them pooing everywhere as i'm guessing she couldn't get to the tray or outside quick enough. Now this is clearing up the diarrhoea has gone but every morning i wake up to find another piece of treasure in one of the rooms instead of the tray.
Why is this happening? Trays are cleaned very regularly and she has never done this before in the two years we have had her but it is very quickly becoming irritating!