How do you remove urine stain from a rabbit?

Your local pet store should have some pet stain removal products. Nature's Miracle works really well.

White vinegar will help to neutralise the smell, loosen some of the sticky residue, and lighten the colour, but you may not find it effective to fully remove the stain.

Be sure to clean up urine messes as soon as possible because if left alone rabbit urine can damage the surface its on (upholstery, carpet, wood flooring, tiles, anything).