There is a principle pertaining to the operating room instruments which states that “if you are in doubt of its cleanliness, then it is not sterile”. It just simply means that even if the hospital instrument looks clean, there might still the presence of germs that lurk on it, so it is not safe to use for medical operations. The same principle should be carried upon in our own homes. As for the new toothbrush, fresh from the packet, they are not guaranteed to be as clean as you imagined even if they have not been used. So, to make sure that you have a germ free toothbrush, then might as well purchase the ever reliable and innovative toothbrush sanitizer. The bacteria specifically in your toothbrush head will not be taken away by simply rinsing it with water. And, there is no guarantee that no harmful effects will be dealt upon us if we opted the chemical toothbrush sanitizers available in the market.