Hydrogen Peroxide is anti-bacterial, anti-fungal, anti-mould and anti-mildew.
It is non-toxic for people, plants, household animals, and the earth. (Don’t forget that whatever household cleaners you use do end up going back to the earth, rivers and oceans eventually. In most cases, cleaning products will go through the sewage system first, but it all goes back to the environment eventually.) Hydrogen peroxide can be used for cleaning so many different things, it can simplify the number of different cleaning products you need to keep around. And, finally, using hydrogen peroxide for cleaning tends to keep your sponges, mops, and scrub pads a whole lot cleaner. (They'll all get a bit of disinfecting every time you use them.)