You need to incorporate learning experiences consistently to get the message across. Of everything you’re doing, what’s not happening is showing the rabbit what the alternative action is when he has an urge to pee and he’s on the bed.
I suggest the method I used with Wick. Once he’d poop or pee on the bed, I’d hiss very loudly to spook him and signal that action as significant, then immediately bring him over to the nearest litter box. Additionally, it’s still learning if you catch it before it happens. If you see the butt arch, hiss so he stops and bring him right to the litter box so you can praise him when he does pee in there.
Clearing pees and poops isn’t effective if the rabbit already establishes that’s an okay pee spot. Remember that we clean litter boxes daily, but the rabbit still goes there obviously. It’s an established spot, so clean or not it will go there.
The more learning experiences you can rack up the better.
The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.