Yesterday l started training my 1,5 year old horse, set her free for a while to pasture on her own (without any horse company) and soon l saw she was werry nervous. Horse flyes and LOTS of them. Then l remembered something. I took my wood winegar that l made with my charcoal kiln and sprayed it all over her fur. Not a sign of any fly anymore and the horse smells like BBQ
Edit: l bet same could be done with hopper juice. Anyone willing to try?