Aaaagh, our very very gorgeous six month old kitten has, for the second day in a row, poo'd in our sitting room (flagstone floor).
She has never done this before and up til this point has been perfectly house trained.
She is a super happy, confident cat. I don't think anything has spooked or unsettled her.
She has a covered litter tray in the utility room which she has always used up til this point (she is still weeing in it). I use World's Best Cat litter and remove everything daily, once or twice daily so it's always clean.
I've washed the floor with washing powder in hot water and used the wee spray stuff.
What should I do? Get a second covered tray and put it in that spot?
She does have access to outside but no cat flap. I don't think she knows to poo outside, she's always come back in to use the tray 
Obligatory picture of the offender attached