Hi,
This is a question for Steve and some of the other chemists on the list...

I have read about and been advised to keep my toothbrushes in an antimicrobial 
between use.  The general advise is something like Listerine but I don't really 
like that so I have used peroxide for a long time.  I recently switched to CS.  
Evidently toothbrushes are *seething* (mild hyperbole) with microbes that just 
keep reinfecting the mouth and the mouth is one place for focal infections that 
keep the immune system challenged.

My question is, "If I mix CS and 3% H2O2 will that increase the germ fighting 
capability of the liquid or create a whole new chemical that will do something 
totally different and perhaps not desirable?"

Thanks for any guidance you can give.  
PT

PS:  another good way to sanitize the toothbrush is to put it in the dishwasher 
every few days when you run it up.