So it seems that trace amounts of a substance allow one to advertise a product as containing that substance.
Like the Betty Crocker sugar free cake mix that prominently displays "sweetened with Splenda" on the front of the package . . . but the splenda amount must be tiny, since splenda is one of the last ingredients under the "contains 2% or less of the following" part of the label. Most of the sweetening comes from maltitol, a sweetener known for having a laxative effect.
Don't know which smiley to use about this one -
or
. . . or more likely
Next lawsuit coming up: do the hamburgers at fast food joints contain any actual ham?