Oh my goodness,.. as much as I love animals,.. 2 things that I cannot tolerate, is not being house broken, and begging.
An animal/s using toilet, in my bed, would be the height of my intolerance…I’m no expert, but, I def would say that your buns, are not as housebroken, as they should be. I would absolutely, house them, in their own ” home/cage” area, during the night… its nothing that should harm them, nor cause them stress even… If you have a well looked after, happy bun, then, they should seek out, resting in their ” area”, even while allowed free roam. – Question I have for you is – are both ” fixed” ? If not, that, alone, could be causing some of your problem.
I admit, I am not 100% sure on this about buns,.. but, the premise, is pretty strong ( dogs and cats ), and, suggests to me, that its really not that much different ( & trust,.. bunny pee, is quite strong in odor, of itself, as I’m sure, you’re well aware of
,.. but,.. pet urine, needs to be treated, different, then just regular laundry ( using laundry here as ex, since they are using toilet on something, that you can launder). White vinegar, mixed with water, seems to be the cheapest, but, there certainly are MANY other, pet enzyme odor removers out there, on the market… My guess,.. is that ur buns, can still pick up the urine markers, they have set out, and, continue to refresh them, as they see fit, even after you launder your bed items.
I don’t want to sound bossy, and try to tell you what you NEED to do, but,.. I am definitely going to tell you, what I would do ( as posted above). No one, would like to wake up, covered in ANY urine, I myself, would go to any lengths, for that not to happen,… caging them overnight, seems a reasonable thing to do, if u ask me.
Edit – just reread, and seen that they both are fixed, – apologies
Good luck to you!