Serrin,
Wow this thread took off. My hens still have the head shaking runny noses , no noticeable change. No other symptoms, 18 laid 15 eggs yesterday. I have been cleanning coops yesterday and putting in new shavings. I had already done the poop boards. I took out about 7 big leaf bags. It was not that old, only three weeks for the flooring and only a wk for the boards.. There was a mix of lots of hay and shavings. I decided that maybe it was the hay bothering them. Im afraid it has not worked. I will call the NPIP tech. tomorrow and see if they are going to come out to test. They do not appear that sick just this clear lig. with head slinging. Yuck. My poor babies.