Toothbrush - S1.E12

Bertie the Boar has a terrible itch and has gone on a rampage through Ballybeg in an effort to scratch it! Meanwhile Garth and Bev have to clean Fiann's old cauldron and when they discover Bertie's bristly hair is the perfect thing for polishing old metal, Lir sends them to China to meet Lu Ping, who discovered another good use for pig bristles: cleaning teeth!