The distal urethra is a residency for #bacteria, mostly commensals, but sometimes potential uropathogens move in. #Catheterisation hygiene cleans the skin around the urethral meatus but does not remove bacteria residing in the distal urethra. Many people have focused time, effort and money on coatings that are supposed to prevent such bacteria surviving #catheter entry into the #bladder. Such a #coating would need to kill the potential pathogens before they are transferred fr