Recently one of my customers wrote to ask:
Mr. Peanut eats his food and seems excited for it in the morning. But overnight if there is anything left or even it it's empty (as we tried last night) he gets right in and pees. He was doing well for a few nights of not peeing outside his litter box but for the last five nights he seems to prefer peeing outside of it rather than in. Just looking for a little advice from an expert!"
So What is a person to do?
For instance, why choose to use the food bin as a place to go pee AFTER having used a litter box? I sometimes don't understand bunnies. My guess is that one night while munching on hay, bunny had the urge to go pee, was lazy and decided to go there. Since he peed there once, it's easy to just go pee there again.
In this particular instance I suggested they move the feeder up higher so it's up off the floor. You'll generally need it to be up at least six inches for this to be effective. But if the feeder is big enough to fit an entire young rabbit that's not going to work.
So I would simply remove the feeder at night.
Any other Advice?
I thought Celia Haddon had some good advice in her post about why a rabbit might stop using a litter box. I particularly appreciated her thought that sometimes we don't know what caused our bunny to not like their litter box.
BudgetBunny has put together a similar list as well as pointing out a possible solution. (make it impossible for bunny to NOT use their litter box). :)
For some bunnies, litter box habits are vastly improved by neutering them. One suggestion from The Rabbit house.