How to clean extreme filth, animal mess, trash, junk??

Ok - here's the deal-

My bestfriend's cousin has been going through some health problems lately, and has been suffering serious depression. She has let her home go to the extreme extent, and I know it bothers her. She has tried to clean and organize many times, and it somehow piles up on her again.

She takes in stray cats, and has an indoor dog. The cats have made such a mess of her home. Some use the litter box and other go ALL over the floor, on the couch, kitchen counter, even the stove! :*( She loves the cats and will not get rid of them.

Her floor is so soiled, the beige carpet is now med-dark brown with filth. The cats walk on this, get it on there paws and walk all over the counters and leave nasty paw prints, everywhere. Her dog gets into the trash and spreads it all over. Her cats urinate and poo all over her place, on bags and boxes. She is in a rut, and can't seem to keep everything clean.

Any advice, how to you clean this extreme filth?

Answers:
can you use windex to clean laminate hardwood floors?
  • how can i find the tv coupon for carpet flick kit?
  • Dry cleaning is cleaning solution other than water, whay can't they be cleaned with water?
  • Most effective way of ridding knats?
  • How do I get a grass stain off my white sneaker?
  • do any body know how to get rid of a white mark off stained wood [heat mark]?
  • how to remove bic wite out correction fluid from a pair of cotton pants?
  • How does drycleaning work?
  • How do I carry this stain out?
  • Looking for the best mothod of cleaning grease, and grime from an electric guitar fretboard..?