Clean House

I love my dad so much but he isn't as clean of a person as I am.. I am not a clean freak but I like to make sure things are decently clean, especially bathrooms& kitchens. Anyways, my son is almost 7 months old and every time we go to my dads we have to hold baby because I don't want him on the floor. My dad has 5 dogs so there is hair all over.. 
How can I tell my dad I don't feel comfortable going to his house anymore since the house isn't cleaned to my liking for baby?? 
He also has his alcoholic sister living there and she annoys me so much.. she doesn't even lift a finger to clean anything 🙄