Oh well I'll not post his stuff again though this paragraph from the Cornell lab is concerning to me especially the last few sentences because nothing is stated of the effects of long term ingestion of low concentrations and it doesn't matter really how long we've used stuff without knowing or having knowledge of factors contributing to effects caused by it's use. Terpentine was administered daily to cure what ails ya for example; http://books.google.com/books?id=-389AQAAIAAJ&pg=PA360&lpg=... . Rat's it has been noted are not good if used for an example of the effects toward humans. ** http://pmep.cce.cornell.edu/profiles/extoxnet/24d-captan/24d-ext.ht... ENVIRONMENTAL FATE 2,4-D applied at 1.16 lb/acre to bluegrass turf in a laboratory experiment had a half-life of ten days. Other half-life figures for the herbicide in soil are seven days (15-25 degree C with 65% moisture) and ten days in non-sterile soil and 1.5 to 16 days in other studies. Soil microbes are primarily responsible for its disappearance in soil. Studies in Alaska and Canada failed to detect leaching in 22 weeks or from spring to fall (), but 2,4-D has been included on the EPA list of compounds that are likely to leach from soil. In aquatic environments microorganisms readily degrade 2,4-D and breakdown by sunlight is not a major reason for loss. Rates of breakdown increase with increased nutrients, sediment load and dissolved organic carbon. Under oxygenated conditions the half-life can be short, in the order of one week to several weeks. 2,4-D interferes with normal plant growth processes. Uptake of the compound is through leaves, stems and roots; however, it is generally nonpersistent. In one study when 2,4-D was applied to grass, there were 80 ppm at day zero, 45 ppm at 14 days, and 6 ppm at 56 days. Breakdown in plants is by a variety of biological and chemical pathways (). Despite its short half-life in soil and in aquatic environments, the compound has been detected in groundwater supplies in at least five States and in Canada (). It has also been detected in surface waters throughout the United States at very low concentrations.