The device works when the FDA, KFDA, or similar body approves it works, not a moment sooner. The device has been around since at least 2007 (long before the courts were involved). No official approval in this time (last I checked, Chemcon doesn't make decisions for the FDA) and no sales in those earlier years to veterinary and agricultural industries. The device may work but there are red flags. Time will tell (imo).