Hi... my piggies have recently been scratching and loosing hair. I took a look today and saw that there were white moving specs in their fur. Pigs are itchy and their hair is falling off in clumps. How do i treat this? These bugs are white and they crawl up and down their fur. I can see them with my bare eye. I put some PestAVert from small pet select on them. What are my next steps and what should i absolutely not do? Thank you.