Title says it all really. Our eldest daughter stayed home while we were on vacation and didn't realise the cat had been using our youngest daughter's bed as a litter tray. The tray wasn't as clean as I usually keep it but was no way near filthy. I think she was left alone more often and DD did have lots of friends over for sleepovers. All fussed over the cat. She was still using the try to poop in and has never peed outside her tray before. Does anyone have any idea why she would have done this. We are all going on vacation in October and my MIL has offered to cat sit so any advice on how we can try to avoid this happening again. Obviously we can keep all bedroom doors closed but she may then pee on our sofa. Also don't want my MIL stressed while we are away. So upset as it has really put a damper on our return from holiday.