With perspex you get smearage

Roy and HG - Bludging on the Blindside - A podcast by ABC Grandstand - Saturdays

Roy's been hard at work giving HIA's on mice. The results are varied. Meanwhile, dog collisions at the greyhounds are a BIG problem. On the first bend, the dish lickers come over the fence, mistakenly confusing the lurer for a punter's head. Roy remembers one time, eight dogs chewing on a person's head! Now they have a perspex safe fence which attracts smearage.