I own a 13 year old cat and she has been not using the litter box at all. It has been damaging our floor and our marriage with the utterly outroucious pungent odor. It has been embedded on the walls and the smell reaks like a dumpster. Now the wooden floor has been rotting and we do not know what to do. Could it be a problem with the litter box or is it just a result of old age. Many people have told me to put it to sleep but I do NOT want to that.