The silicon whip, which is the main pain-inducing device (the heat is laughable, and the electric shocks are painful but don't do permanent damage) was changed against a new one and disinfected before being re-used by the next player.

At least that's how it was managed at the two events where I had some fun with that thing, the Computerspielemuseum Berlin and a Chaos Communication Congress (back in the days when it was still at BCC).