OMG,
@Lisak1 unbelievable! I've never heard of someone being such a food hoarder. I agree, it's an illness and she cannot help it. Those Hoarder shows that try to "fix" those problems may fix it temporarily, but unless someone is there daily to keep it from accumulating again, it will never be a forever fix.
My brother had 3 cats in his house when I started helping try to clean it up. He had 1 litter box, and probably never cleaned it out, maybe once a month. Unbelievable! Cats will use something else when the litter box is full, and that's what they did. He had clothes on the floor of his bedroom, never washed them, literally saw him pick up a suit coat from the floor, shake it out, and planned to wear it to a funeral I was picking him up to go to! OMG, we had to go shopping. That coat had been peed on by his cat, and I wouldn't even allow it in the trunk of my car, it stunk so bad.
I have finally gotten him to understand the need to launder his clothes, and the cats are all gone now, thank goodness. I had to tell him to keep "good clothes" and suitcases in one room that the cats were not allowed in. That helped, too. When he comes to my house, I can actually stand for him to ride in my car! But, usually I have to wash his clothes while he is here. He doesn't smell it, but I do, even though it's wayyyy better than it had been! His house is till terrible, but it's his house. When he dies, it will be torn down.
Saddest thing is that his house is 1 block from college campus, and is worth a LOT of money! His bicycle shop is also only a few blocks from campus, and although it's the messiest bike shop you will EVER be in (yes, we spent 2 days - 10 people - to clean and organize it, and that lasted only about 3 months ...), it is also worth a boat load of money. But, so far I have not been able to convince him to sell both, buy a smaller house with a garage, and take only some of the hundreds of bikes still in boxes, put one together a month for "spending money". He would live very well, but he's so frugal. He has an almost 30 year old BMW car that is currently not running ... again. Electrical issues, mechanic is scratching his head ... again. He could buy a new car, very nice house, and live high on the hog, but he refuses to see the reality. He thinks he HAS to keep the bike shop, but he rarely sells a new bike, MAYBE 1 per year! He sends away repair customers, because they have "cheap bikes". UGH!!! Again, he has Aspergers, and does not deal well with people, but we can't convince him to give up the shop and move. He's comfortable where he has been since college (he never left the college town).