BUT some bunnies get rather dirty sometimes...bucks from pee spray (if they are sprayers) and sometimes does get messy when caring for a litter and wee youngsters when learning to care for themselves sometimes just need a helping hand. These are cases OUT OF THE ORDINARY.
Normally bunnies do NOT need to be bathed. They keep themselves clean.
There are two main methods
1. Dry method. use cornstarch, work it into the coat and brush it out. As it comes out it takes the dirt with it.
2. Wet Method. Give the rabbit a bath in warm water. Towel dry the bunny well. Do not get the rabbit wetter than you have to. Really no need to wash the whole rabbit if only his feet and rear end are dirty.
To get rid of pee stains use vinegar or lemon juice. Just spritz it on, wait a spell and then rinse it off. :)