The best antimicrobial treatment of all is both peroxide and vinegar... not mixed, first you apply one, then the other.
Not sure how much one can dilute them for that approach.
: I wish I could find the link but I read about a study that showed using this approach actually disinfects BETTER than chlorine bleach! I use straight HP (the 3% stuff from the grocery) and white vinegar for this. I keep a sprayer of each under my sink and use for cleaning fruits and veggies, too.
The bottle of peroxide you used to bleach your hair is at a different percentage, but the 3% can affect some fabrics. I use vinegar only for that reason and I have no patience to use one after another (vinegar and hydrogen peroxide).