It sounds miserable and I totally get it. I have been in the same situation. I didn't babysit as often as you, but it just became too much after they got a dog and put the dog and it's cage in the "guest room" where I would stay. I tried to say something and they got prickly at first and sort of put me off and made a lot of excuses. I was fully prepared for this as I knew they were defensive. However, I was not prepared for the way they just acted clueless when I pressed a bit about the situation. I gave some examples to them hoping they could understand that I didn't want to share the room with a big dog and all the hair and that the restroom should be useable etc., and before I knew it, the shoes were on the other feet and I was in the wrong. I tried to use my house as an example that when they come, I always have it clean and tidy for them and I would appreciate the same consideration. They were just indignant. It went so badly that I was spoken to for over a month and I don't think I will ever be forgiven about it. I do not keep the kids at their house any longer and they only come to my house now or I pick them up and take them somewhere. It has been a few years now, and I am really happy that I do not have to go over there anymore, and they can live the way they want. I shouldn't have said anything to them about their house. I was feeling unappreciated and taken advantage of. In the end, I really should have just put some limits on my time and availability without any explanation or excuses. For instance, "now that xxx is in school and the baby is bigger, I am going to join a women's group and work on my health so I can be here for the kids when they get older. If you need me to watch the kids while you two go out, just call and ask if I am available and I will watch them at my house." I want you to expect some push back and even a lull in visits. They are happy with the way things are, so it will land hard with them even though it shouldn't. When people are beginner hoarders/slobs, they are still perfecting their prickly nature, so get ahead of it. It is okay not see them quiet so often and some distance will allow you to let them live the way they want to. Just don't use the house as a topic. It is a no-win situation. Best of Luck.