So not trolling here- serious question. My concern with these things is that the spray nozzle would get "dirty" and end up spraying fecal or urine tainted water

So not trolling here- serious question. My concern with these things is that the spray nozzle would get "dirty" and end up spraying fecal or urine tainted water at my bum. When you raise the seat does the spray nozzle raise with it? How easy is it to clean? I have 2-10 year old kids that would be using this thing so I am more concerned because they have not yet mastered good aim or toilet hygiene...