So we have two conflicting statements, one that it should be rinsed and one that it doesn't need to be rinsed. My bigger question is how do you rinse a 4ft PVC cage with RHP and possibly UTH all hooked up on it. That sounds like a pain. I do full tear downs on my cages once a year and scrub each piece but I do regular substrate changes and wipe down cages with Chlorhexadine once a month.