Yeppers - now imagine someone doing it to you who isn't related by blood. I used to have friends that lived in the same unit complexe as I did they lived on the ground floor and I lived about 2 floors above them - they would let rubbish bags build up infront of their kitchen instead of taking them out to the bins. They ended up with 10 bags of rubbish including food waste and of course a rat somehow managed to get into their unit … they ended up naming the rat George and warning people who visited not to be freaked out by it. The rental agency ended up instigating a 2 monthly inspection on their unit - normally they are once every 6 months.
Look, I know not everyone's supposed to be a super neat freak, but geez. They couldn't show a little respect for their home?