Subscribe | UPI Odd Newsletter Subscribe GRIPPERIE-SAINT-SYMPHORIEN, France, Nov. 23 (UPI) -- A French duck farmer who claims cannabis is an effective de-wormer was fined $669 and given a suspended jail sentence for possession of the plant. Police said Michel Rouyer, who owns a duck farm in Gripperie-Saint-Symphorien, was found to possess 12 marijuana plants and 11 pounds of bagged cannabis at his duck farm, Radio France Internationale reported Tuesday. Advertisement "There's no better worming substance for them, a specialist advised me to do it," Rouyer said. The farmer admitted to smoking some of the marijuana, but he said the majority was fed to the 150 ducks to keep them free from worms. "This is for real, not one (duck) has worms and they're all in excellent health," Rouyer's lawyer, Jean Piot, told the court. A police representative said the incident marked "the first time we've heard of something like this."