Hubby went to the feed store yesterday and brought home 11 bags of grain. We dumped 7 bags and started to notice webbles. there were alot of them!! Will these little pains cause my horses problems??? We sifted them out as best we could and returned most of it...I know that horses should not eat contaminated grain, but I am stuck, and I don't have any other feed. I have been waiting on this shipment for awhile.