As a public notary you will be called upon to witness many important documents that require a notary's seal of approval. Never, never, never use whiteout to make a correction on any document for any reason. I heard a "but" in the background from someone! There is no exception or reason for whiteout, end of sentence.
If there is a mistake by you or the customer, cross out the incorrect information using a single line (not scribbly-scratch like the kiddies) and enter the correct information. Always initial or have the customer initial any corrections or modifications to a document.
URL: http://www.needanotary.net/ Source for Finding a Neighborhood Notary Public 24/7/365 Nationwide