I Put this crap ( Sergeants) on my two small shitzu/ poodle cross dogs. Both had a reaction but one had far more severe reaction. It has been five days (three with benadryl) and he is still going crazy!!. Shaking his head, itching uncontrollably, panting, so agitated and anxious. He looks at me and begs to make it stop. I am sick about this! How in the world is it even possible that this product is still on the shelf?? People have been posting on this site for years and not one single attorney has come forward to take these cases to court? I finally called the vet today after trying the dawn and benadryl. I think it has helped but not nearly enough.