3M Scotchguard voluntarily withdrew scotchguard when it was discovered that a chemical whithin the product was remaining in the environment and tests showed that some people had traces of it in the body.
Although it thought to be perfectly safe 3M decided to withdraw now rather than face future problems if further tests show a problem.(Teflon could be next)
All products still out there can be used but cannot be replaced.
3M will be announcing a re-launch of a totaly safe product in the near future.
Expect huge demand for the product as 3M has scored a massive popularity hit in the US with its actions seen as the act of a responsible company acting in public interest with out being forced by goverment etc.