“For a year, my four-year-old cat hasn't wanted to go to the litter box, always with fresh sawdust or sand. I will add, that I always wash the litter box thoroughly after the cat is left. By 3 years there were no problems; until one day he started to pee in the same place on the bed, then onto the carpet. To prevent the whole apartment from peeing, I try twice a day, at the same time, insert it into the litter box and squash or massage the bladder, provoke him to urinate. Unfortunately, Nothing helps. Is there any other method to teach him cleanliness??”
The principle is as follows: domestic carnivores (for example cats, psy) they usually urinate at places, where they can smell previously passed urine. So I advise you, not to clean the litter box every day, just like now, but every other day. This should help. Thanks to this, there will always be a smell of urine there. Places, where your cat gets dirty most often, may be permeated with the smell of a foreign animal, who were there before. This can also affect your cat's behavior.