Rabbits tend to urinate in or perhaps a few specifc places & can be litter-trained at any age.
However, adult rabbits are more basically trained than kids, who havent yet fgured out the desirability of keeping their waste matter away from their eating & sleeping areas. Also, plenty of litter-trained young bunnies will start having accidents in the coursework of their adolescence (up to about one 1/2 years elderly).
Start with a small litter box in the rabbits cage or living area & at least litter box in every room the rabbit has access to. If your rabbit urinates on the foor basically add another litter box in that location. Later, it is possible for you to to remove boxes they makes use of less often.
The rabbit will often select where the litter box ought to be placed, by eliminating in the place of their choice. If they chooses public of a place for his litter box, use a covered cat box, or decorate a immense cardboard box with wrapping paper & place it over the litter box. That way the bunny will have a place to play & a covered litter box. You can also slowly, over time, move the litter box to a more suitable location.
Some rabbit parents document nice results with the new sifting pans made for felines. The litter goes in the bottom, then the sifting tray sits on top of it. Fecal matter & urine drain through to the bottom & the rabbit stays comparatively tidy. This is an important point, as plenty of bunnies love to lounge & sleep in their litter boxes, so you must keep the box tidy.
The safest litter for rabbits are those made from recycled newspapers or corn cobs (such as Yesterdays News Carefresh.) Newspapers covered with straw may also work. Plain clay cat litters are acceptable if your rabbit does not eat any of it, which may cause intestinal blockage & death. Never use clumping cat litters or litters with chemical deodorizers as these are hazardous if ingested. Never use soft wood shavings such as pine or cedar, as studies have shown these to cause liver destroy in rabbits & other small animals.