Okay I need ideas! Banjo has been rubbing his tail almost obsessively, to the point where the top is almost bald and he has also made the hair on his butt all weird on either side of it. He is wormed regularly and I have tried listerine, mane & tail conditioner, baby oil, fly spray and even louse powder. He does not have a bean- I checked that the other day, and his sheath is clean. I am clean out of ideas- any suggestions?