My mother-in-law (78) has never been big on cleaning but the last few years the house has got progressively worse. My father-in-law (79) does not cook or clean. Everything is dirty and the smell hits you as soon as you walk in. Recently, my mother-in-law had a fall so I offered to go over to clean but she refused saying my father-in-law could manage, but he has told my sister-in-law that he isn’t doing anything and will wait until my mother-in-law is better. It’s been 5 weeks now and the house is in a terrible state (poo running down from the toilet bowl, carpet covered in bits, no clean surfaces) and the smell is overbearing. My husband and his brother won’t say anything to them. How do I get them to accept the help?