OP fucking hell really
just use the pro$$ie's shower (or sink if no shower) ..., give ya bits a good splash of water lather up some soap /shower gel etc
all around ya crotch and bell end etc and rinse well
failing that use some baby wipes or other types of skin cleansing wipes even alcohol wipes
caution might cause a slight stinging sensation on ya sensitive bits nothing long lasting though
and give ya bits a good wipe around with the chosen or available wipes
also having a piss as soon after a punt as possible can help flush out anything
as for oral cleansing a small bottle containing a decent anti bac mouth wash and have a swish around & gargle
failing that rinse with anything non toxic to help remove any nasties
but saliva is pretty good at dealing with a lot of things as long as you don't have any sores /wounds in your mouth so don't be overly concerned