Definitely yes. Above all when such contaminated food are found, do not return but destroy them otherwise they will come back other day, either on alternate road or with new fake labels or as the last resort, they are fed to the poor in China.

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1996 E320 since 1/16/08, 171K miles as of Feb 2011

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1989 300CE - R.I.P. Dec 29 2007
Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE