My 5 piggies, all itch though their seperated, have been for months.. no hair loss, no hair grease, no bold spots, happy, very energetic and eats a lot! Just scratching constantly, doesn't mind touching... a while ago when they still itched and we went to the vets it he said there was no mites or anything, (i use fleas beddingwith recycled pper pallets and “fine hay” theres nothing wrong they havejudt been itching and itching