I generally dont 'wash' my snakes unless they do something stupid like paint the cage with poop....which they have done. You can soak them in the bath tub if you want or i use 41 qt sterilite tubs with luke warm water but thats usually only in the summer when its hot out and i use water that is slightly cool to the touch as we are 98.6F.
Thanks. I usually avoid letting them wrap fully around my neck. I try and keep them on my shoulders or slung over 1 shoulder and around my waist or they like to sit on my head.