Well,check out my thread in here about infected,but tastes ok for my latest results on this topic. I soaked the fermenter clean with PBW,ran that through the spigot,Then dito with rinse water. Right before filling,I sanitized it with Starsan. but I didn't remove & clean the spigot & the hole in the fermenter where it mounts up. A lactobacylis infection was the result about a week ago when time to dry hop. so at that time,I skimed it off as palmer's book said to do with mold (I thought it was,with a couple lacto bubbles). Then dropped in the sack with a few ounces of hop pellets & sprayed Starsan on top,just as an additional experiment.
The infection came back,but with smaller bubbles. See my other thread for pics between last Fridays sample & this morning. It's good enough to be almost normal,so I'm gunna bottle it. Yor results may vary...
So anyway,you need to remove & clean the spigot,& clean & sanitize the mounting hole with a paper towel & some PBW. Then a rinse water soaked one,then with one soaked in Starsan. Soak the spigot in Starsan breifly,& re-assemble wet.