Rubbing alcohol (over 70%) is just as effective (alcohol is the active ingredient), and much cheaper. Pour a bottle into a container of disinfecting wipes, and you now have very powerful, disposable, disinfecting hand wipes. Those who want a nanny state have stopped being able to think for themselves.
P.S. Don't drink the rubbing alcohol, tards.
Is not an effective anti-anything. Do not depend on it.
Give a read on how copper and silver, etc have anti-bacterial and anti-viral properties and you'll see why colloidial silver doesn't.