Basically title says it all. I have two 5mth old kitties.
One kitty is very nervous (I think due to being badly handled by a small child when she was tiny) not my child BTW!!
We have had a few wee accidents (which tbh are starting to annoy me as I have 2 young kids) and she will wee on anything left around laundry, old coat etc.
However she has got much better lately after some TLC 
But then I came downstairs and the was literally poo/wee everywhere I don't know for sure which cat it was but can guess iyswim. The litter tray is untouched 
Cats have got a clean bill of health by vet BTW and are due to be spayed next Monday.