I have a saint bernard that i took to the vet last week for a double ear infection. I also mentioned to him that i was sure he had worms because his stool was loose at times. But i said i forgot to bring in the stool sample. I asked if he would give me strongid to deworm him. He said he would rather not without the sample. But he said that Sentinal would be the same thing. So i put him on Sentenal ( he has been off since Nov. for the winter) Well today he pooped in my house really bad diareah (sp) and it was muccosy. Would this be because the sentenal is killing the worms and they are coming out or Do you think he needs the strongid. I guess what i am asking is Sentenal as good as strongid? PLEASE HELP!