Monsanto [3] is discovering a troubling new side effect from use of Posilac, its controversial recombinant bovine growth hormone (rBGH) injected into cows to increase milk production: use of rBGH is shriveling up the market for milk from Posilac-treated cows. In response to growing consumer demand for hormone-free dairy products, retailers are increasingly rejecting milk products derived from rBGH-injected cows. The Kroger Company announced in an August 1 press release [4] that by February 2008 the company will sell only milk that is certified free of synthetic hormones. This represents no small blow to Monsanto; Kroger operates 2,458 supermarkets and other stores in 31 states, as well as 15 dairies and three ice cream plants. Kroger's holdings include the major grocery chains Ralphs, Fred Meyer, City Market, Food 4 Less, and King Soopers. Kroger joins Starbucks and other retailers in rejecting use of Posilac. The bottom line? A little more pain for Monsanto and little less pain for the cows.