Stanley Francis wrote:
>
 
> .As an alternative to bleach, you could experiment with a dilute solution
> of ammonia, or washing soda (sodium carbonate) or indeed any alkali.
> Hydrogen peroxide is staple under acid conditions, but in alkaline
> conditions, it  becomes unstable 'break down' and releases nascent  oxygen.
 
One thing I do know is never mix ammonia and bleach, it's poisonous.