It is not absolutely necessary for their well being and will freak some snakes.
Instead of a bath, put a larger water dish, dog food bowl or Pyrex dish into the viv or spare RUB or tub. This give the snake the choice whether to take a dip or not.
Sometimes you might find it taking a dip in its water dish when it is coming up for a shed. It can also be a sign that it is affected by mites and trying to ease the irritation.
1.0.0: Miami Normal: Taggart 0.0.1: Carolina Normal: Wee Woody 0.0.1: Grey Rat Snake: Mirkey 0.0.1: Amel Corn: Blaze 1.0.0: Carpet Python: Vambo 0.0.1: MBK: Fester 0.0.1: Florida King Snake : Rattler (Rattle & Hum) 0.0.1. California King Snake: El Diablo Diego 0.2.0 Tarantulas : Ermintrude & Euphemia.