Seventh Generation, Method and other leading personal care and cleaning brands may soon face lawsuits if they don't remove the word "organic" from their labeling and marketing by Sept. 1. The ultimatum comes following a recent investigation by the Organic Consumers Assn., which uncovered a potentially carcinogenic contaminant in various products. The OCA investigated nearly 100 organic cosmetic, personal care and household cleaning formulas, and found that nearly 50% of them contain detectable levels of 1,4-dioxane, which is known to cause cancer in lab animals. None of the manufacturers disclosed this information on their labels, even though many had levels greater than 1,000 times the acceptable level.