She's (at least) 15, we got her about 12 years ago from a rescue home and they reckoned she was about 4 at the time. She has arthritis and bad teeth but she's had various blood tests including kidney and liver function tests and they haven't shown anything else wrong, in fact the vet says she's remarkably healthy for her age.
She's never been exactly clean from the start, and despite the fact the rescue home wanted someone with a garden, she's never gone to the toilet outside but uses a litter tray inside (we tried without a litter tray but she pooed on the bed instead!). Now she ignores her clean, regularly changed litter tray, and does everything in corners all over the house.
She's been banned to the kitchen for now because I can't cope, and we've set up her litter tray, food and water, and a place to sleep, and she can go in and out via the cat flap but does anyone have any ideas about how to stop this? I have kids, we both work full time in very demanding jobs, and it's a rented house so we're seriously considering giving her back to the rescue home if it doesn't get better! Any suggestions, as we like her in other ways and would like her to live out her days with us?
TIA 
