>>But the point here is that you're not trying to disinfect the cage, you're trying to clean it.
Yes, but you said, "Personally, I prefer healthy habitat and/or bleach. Both are effective at getting dirt, poop, and other kinds of cage funk clean."
Bleach doesn't clean poop. Soap, water, and elbow grease does. Bleach at a concentration of about 5% (about 50mL of bleach to 1 L of water) is a good disinfectant once the cage is cleaned with soap and hot water.
>>Bleach is excellent at getting things clean. In this situation, its disinfecting properties don't matter - the goal is not to disinfect, it is to clean.
Again, the intended purpose of using bleach in the vivarium is to disinfect, not clean. If you read the "Disinfectants" chapter in Doug Mader's Reptile Medicine and Surgery (2006 ed.), you will understand my point.
DR
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