So are you saying he uses the one in his cage just fine, but he won’t use the one out in lounge. Is that right?
It sounds like he will just begin to pee right near his litterbox in the lounge? If this is the case, then the MOMENT you see him BEGIN to lean back, and START to LIFT his tail, you need to put him in the litterbox, put a treat in there and back away.
If he refuses to move, you can’t wait for him to finish his business, you just have to put him in the box.OR better yet, put his first half of his body in the box, so he has to jump in the rest of the way. Give him a treat while he is in the box, so he does not look at it like punishment.
I know it’s hard to catch every single time, but if you do this for a few weeks and catch him the majority of the time, you should start to see results.
Also, just to double check – he has always been difficult with his box yes? If it’s something that just started up then you may need to make sure he doesn’t have a bladder infection.
EDITED TO ADD: I’m going to head off the forum now. I”ll check back with this tomorrow. Keep us updated.