[NonValueAdded]

Enzyme products are recommended for mold and mildew over bleach. Evidently there is a defense mechanism in mold that when it is under attack, it releases spores as a species survival mechanism. Bleach will trigger that effect; enzyme products do the kill but without that nasty side effect.

Also, there is a hard surfaces only caveat for the efficacy of bleach. Also note the metal and porcelain cautions on OTC bleach-based cleansers.

Finally, I'd be concerned about concentrations of bleach in traps if I also used ammonia-based household cleansers. I've heard it is not wise to mix the two.

[goat granny]

some combinations of cleaners is a big no no...it causes a toxic reaction that can kill...this goes for those cleaners used in toilets..use the cleaner and don’t add extra bleach or ammonia at the same time. Fumes kill..