Yeah, I wish I knew of a better place to buy rice hulls than the LHBS too. You have to draw the line somewhere on the the cross contaminating issues and take a chance. For me, that line doesn't include these oats. Of course, I'm not on the gf diet and I brew the beer for someone else, which make me more cautious. If you're the gluten free person, then it's your call to take that chance. Maybe it won't affect you. Maybe you'll try one and decide you shouldn't finish the rest. I wouldn't dump it. Give it to someone that has no problem with gluten or someone that is trying to be gluten free, but doesn't really have a problem with it.