I gave my dog Sergeants Gold Flea Medicine and within an hour and a half he was jittery, foaming at the mouth, and scratching himself uncontrollably. So now I will have to stay up all night to nurse him and not feel guilty for giving him what turned out to be a very dangerous product. Save yourself the stress and guilt of trying to take care of your valuable pet. Use FRONTLINE I highly recommend it, I gave it to my dog and he was fine. Instead of purchasing Frontline Flea Medicine I decided to use Sergeants Gold Flea Medicine and now i’m regretting the poor choice I made. I called the emergency hotline number and the lady told me to bathe him in dawn dish soap 3 times and take him to the vet. She said this happens all the time. Well if it happens all the time then why continue selling this product to people??? Its a shame that they are willing to harm animals for a quick buck. P.S. my dog has been scratching for over five hours straight, he is even scratching in his sleep. DO NOT USE SERGEANTS GOLD!