tea tree oil couldn’t have. referring to a web site on “tea tree oil” Experimental sensitization in guinea pigs showed a low sensitizing capacity for fresh Tea Tree Oil. However, mites can cause infection: Mite Infestations (Mange): A mite similar to the scabies mite of people causes serious infestations in pet guinea pigs. Mites are microscopic, spider-like organisms that live within the outer layers of the skin. They usually cause intense scratching and significant hair loss. Some cases without scratching have been reported. Some guinea pigs are so miserable because of the infestation that their constant scratching produces serious wounds. They may run wildly or in circles, and occasionally even have convulsions.” These are other remedies you can try: However, keep in mind this will not work in severe cases: Get some Bag Balm Ointment at feed stores, drugstores or larger grocery stores. Smear the guinea pig with a thick coat all over. Don’t worry about the eyes, its tears will wash i