The Green Grok has a nice update on the Exxon Valdez oil spill.  One disconcerting fact among many discussed in the article is that oil persists beneath the sand at many sites in Prince William Sound, where the spill occurred.  The single comment after the article to date mentions a bioremediation product, and implies that the Green Grok has missed the boat, as it were, on this solution to the problem of oil spills:

With the right technology, a spill can be remediated within 4 – 6 weeks. My website will provide you with some details. I am surprised that in your search for new technologies on bioremediation you did not stumble upon us, of course, search engines are generally known to be quirky.

A look at the commenter’s website, which seems to be, indicates that remediation products discussed there may promote biological activity, but there appears to be no evidence that problems discussed in this Green Grok posting would be solved by them. In fact, as I recall, such products (many of them fertilizers, really) were tried after the Exxon Valdez spill. A lot of effort went into remediation approaches of all kinds there, and if it were as simple as that, it would have been done long ago.