How sad. Really sad. Sad for you too especially as you are posting at this time in the morning.
I just can’t imagine how bad it is that there is slug and slime issue.
I think house work and cleaning do take a lot of time and if they are phone addicts and don’t clear and deep clean on a regular basis then it must be a disgusting environment for them and you.
Also perhaps dil grew up in a dirty household and is overwhelmed. One of my friends grew up in a filthy cluttered house and you had to move stuff to get past the hallway to his room. It was really sad and he grew up with deep shame about his parents.
I think you need to help them and somehow do that without them thinking they are judged. Can you get anyone else in to help?
I would help them in time for the baby and then if they didn’t keep it up I would then consider referring them.
I always wanted my home spic and span for a new born.
Do they have lots of clutter?
Do they have a dryer or dishwasher?
I know they are poor but I have just got a dryer, dishwasher and a reasonable sized fridge (all were cheap brands) and the difference to my life is amazing. I wish I had bought them even when I thought I couldn’t afford it.
Don’t know if you can start with one room - such as decorating the kids room?
This sounds like they need serious serious help.
I used to have an issue with all the crap we had so it meant my house could be totally uncontrollable it took me hiring a guy to help remove it all as rubbish 3 times and most people would think our house was ok as I would manage to put on a show and have it looking tidy but in reality I would have to clean through the night.
This all happened to me because my children were given far far too much stuff and then I got ill in hospital which meant I could keep on top of the house and so even being fortunate enough to realise we needed a cleaner didn’t help. It soon when go chaos pretty much totally chaos.
Nevertheless I still ended up cleaning during the night when I got out of hospital to get it looking good and then ended up back in hospital.
For me it took doing a room by room approach.
I think the fly lady crisis clean would be good for starting with the kitchen too.
Not really sure if it helps you.