I was curious to know if anyone has ever used tea tree oil on or near their guinea pigs? Tea tree oil is natural, but it is very strong. I would be concerned about the strong smell of tea tree oil upsetting a guinea pigs respiratory. I would not use tea tree oil with my own pigs, but out of curiosity I wondered what information was out there in regards to tea tree oil and guinea pigs? It basically works the same as extra virgin coconut oil.