my 6 month old kitten is doing his buisness behind a chair, his litter tray is always cleaned out so i dnt know what the problem is he is also ripping up the carpet there
Try putting the dirt tray there for a few days. Then move it to where you want to bit by bit. It can take time sometimes. It should pay off in the end.
The previous advice is good - I had the same problem with one of my cats (she's now 10yrs old & perfectly litter-trained!) You just have to persevere - they'll soon learn (but I know it's not very pleasant while you're teaching them!! Bless....) K xx