DrDental, Store Your Toothbrush In a Safe Place.
A study conducted by University of Manchester researchers finds a toothbrush can contain over 10 million bacteria including E. coli and Staph.
Toothbrush can be contaminated by the water splashed when we wash our hands, or worse, by bacteria from an open-flushed toilet.
Nasties that fall from toilet spray remain airborne long enough to settle on surfaces throughout the bathroom. And if you drop your toothbrush on the floor, the five second rule does not apply.
Think about keeping your toothbrush out of your bathroom. Also you may want to soak you toothbrush in germ killing mouthwash once a week or so.