Well if you know they don't like water then why are you giving it a bath :shrugs:
But you are correct, they don't really like water, and only if they desire to will they occasionally soak in their dishes.
Other than that the only other reasons to really get them to take a bath are, if they're infested with mites, having shedding issues, or are thoroughly covered in feces and urine and need to be cleaned off.
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