The suggested protocol for Ivermectin is to give it 3 times, 10 days apart. Will a fecal test after the first application show a reduction in worms? or do you have to wait until 3 doses to see an effect? We are thinking of giving Ivermectin to a seriously wormy goat. But I don't want to wait three weeks to find out if it's working or not, so I'm thinking we may recheck the fecal a few days after the first dose to make sure it's having an effect. Also, how many days after should we check?