Then this morning, apparently I forgot to spray citrus in the tub last night, I do this 2X daily, to deter them, and I woke up to someone PEEEED in the bathtub.
I’ve heard of several SVs who like to use sinks and bathtubs for their liquid business. If that’s the worst of it, and there isn’t any more furniture peeing, then I’d just either keep spraying your tub or rinse it after they go.
Incidentally, if you have neutered males, and they are prone to urine crystals it could cause them to pee outside the box due to associating it with painful urination. We have one like this and modified diet has been the only thing to help. What are you feeding them?