1.87% Ivermectin Paste {Farnam} Anthelmintic and boticide. Removes worms and bots in a single dose. The only ivermectin that treats horses up to 1,500 pounds in a single syringe. Broad spectrum control Revolutionary Sure-Grip syringe for easy administration and accurate dosing Complete bot control Treats up to 1,500 lb body weight For horses of all ages, even young foals