Is NOBODY wrong in the post ? POST : I'm living with my fiance's parents for the next few months until we find out where his new job is placing him. His parents are in their 60s and retired, 

They are lovely people, but don't really upkeep their home very well. I'm trying to help where I can with daily household chores, and aside from some minor venting to my fiancé and close friends, have been keeping the little things that bother me to myself. Things like not cleaning up after their pets, hoarding, etc are all ignored as best we can because it's not our house and we're just grateful to have a place to stay at the moment.

One thing has started to push me over the edge. Someone is leaving pee in the toilet bowl, unflushed, lid open. This happens every couple of days and it's a nasty surprise.  I feel like I should probably just internally fume and put it away with the rest of our silent daily gripes. It's their house and we're just their guests for a time. But at the same time... ew.

To keep this short, WIBTA if I ask my fiancé to bring it up with them?