"Is there enough ammonia in cat urine to cause a chemical reaction if you rinse the plastic pan with Chlorox to kill germs? I have a friend who goes nuts when I say I clean my catbox with Chlorox, and thatís after dumping and rinsing it. Even if I didnít rinse it, is there enough ammonia in the urine to cause a problem?"
If you empty the litterbox and rinse it with water, it's perfectly safe to disinfect it with a chlorine bleach, like Chlorox. The answer to the other part of the question depends on how much use the litterbox got and how long it has been since it was last emptied. If you can smell a strong odor of ammonia, then it's inadvisable to pour bleach into an unrinsed catbox.
Lab Safety Signs | Dangerous Household Mixtures