The two doelings we bought at the end of June unfortunately had some bad cases of coccidia and worms (trichostrongyles) when we got them (confirmed by fecal floats run by the state lab). Initial treatment suggested by our local goat vet was Corid for the coccidia. The low dose he suggested didn't seem to tally with what I'd been reading, so I followed the dosing recommendations here. It did nothing (resistant here I suppose), so we switched to Sulmet 12.5% and used a syringe to give orally (dosed straight from the bottle following dosages listed here). We tried the five day treatment and it knocked it out in one doeling, but not entirely in the other. We treated the one for another five days and then her fecal came back clear. A week before leaving for vacation, I had another sample done (on all 3 of my girls) and the one who had the worst case had it again - a moderate load. This time we gave her Sulmet for 9 days and her fecal came back clear. Today I took samples in again (10 days since last sample came back clear) and this same doeling came up positive again with a moderate load!! Feed is way up off the ground. Water is changed at least once a day and has never been soiled with berries. We've been changing their bedding frequently since this all began and up until a week ago, we were rotating them off pasture daily (so prior to a week ago, they were never on the same ground twice). With every dose of the Sulmet, she received Probios and a few times yogurt (when we had run out of Probios). So . . . am I missing something in regard to prevention? My husband is a microbiologist and really doesn't want to add medicine to the water for prevention, but maybe we need to? Of course, first we have to knock this out again . . . but what to use now?