Folks, I've heard some of the prevailing rumors about Program, and sometimes it's hard to keep a straight face. Program is a substance that effects insect metabolisms only, it has no effect on the mammalian system. A few animals may show signs of gastric upset if they are sensitive to the carrier used to make the medication edible. It is approved for use in cats and dogs, and I have heard of it used in ferrets at the cat dosage, but I have not done so myself. So, for those who need some humor- Program DOES NOT make dogs sterile! Program IS NOT a birth control pill for dogs! It is birth control for fleas, actually. These are just two of the rumors I've had to deal with so far, does anyone have any others to share? I've used this in dogs and cats since last summer, with absolutely no reported side effects whatsoever. -Dr. Karen [log in to unmask] [Posted in FML issue 1588]