If you use monthly spot-on flea and tick products on your dog you may want to rethink that. The EPA has just sent an alert that these products may not be as safe as first thought. In 2008 there were over 44,000 bad reactions and 600 deaths as result of these products. For more information check with the Environmental Protection Agency or go to this link http://healthypets.mercola.com/sites/healthypets/archive/2010/03/31/dangers-of-flea-and-tick-problems.aspx