Can You Use Peppermint Oil On Dogs For Ticks?

Can You Use Peppermint Oil On Dogs For Ticks? But even diluted oils can be dangerous, and neither option has been confirmed to be safe. Many of the essential oils most frequently advertised in flea and tick products—eucalyptus, peppermint, lavender, lemongrass, tea tree oil, etc. —are already known to be toxic to dogs and/or cats.