Do you get yours at Tractor supply? I had gotten ivermectin and fenbenzadole there last week and I didn't realize until I got home and really read the box that it had trichlorfon in it :( Its a boticide (flys) that they spray on golf courses thats making old rich guys sick. It makes me wonder if they purposely put it in to prevent humans from using it. I took it back because I was afraid of the boticide, but apparently its not lethal if so many other people use it..?