Its a hovel! I've posted about it before. I am low contact for a myriad of reasons and rarely go to their house due to the state of it, they know this and because 'they're happy enough' and are not bothered. Both early 70s.
There are a lot of issues with my parents, both have health issues and DM is mostly housebound and self neglects. My DB lives with them and is a live in carer for them. He will tell me he's done a 'big clean' when he has wiped some crumbs on the floor and hoovered down the middle of the living room. The reason this has come up again is because they are all away and I'm feeding their cat (no one else to do it, won't ask neighbours because of the mess).
I came back yesterday in tears as it was that bad, filthy pots left all over with flies buzzing round, grease and grime all over the kitchen, the floor littered with old socks, broken biscuits, paperwork. Piles of clutter everywhere. I said to DH I should really have a go at cleaning it whilst they're away ( I've paid for a deep clean twice since lockdown!)
DH is absolutely adamant that I shouldn't be spending my time cleaning their mess when they're not bothered. My DM can't really do much. DF and DB are big drinkers and it looks like a drinkers hovel tbh. They are 3 unhappy people who don't face their problems, all have addiction issues, hence the low contact but this pig sty has really got to me.