Oils known to be harmful to cats include, but are not limited to:
• Lavender
• Peppermint
• Tea tree (Melaleuca)
• Eucalyptus
• Wintergreen
• Sweet birch
• Citrus (d-limonene)
• Pine
• Ylang ylang
• Cinnamon
• Pennyroyal
• Clove
• Thyme
• Oregano

Oils known to be harmful to dogs include, but are not limited to:
• Peppermint
• Tea tree (Melaleuca)
• Cinnamon
• Citrus (d-limonene)
• Pennyroyal
• Pine
• Sweet birch
• Wintergreen
• Ylang ylang
• Anise
• Clove
• Thyme
• Juniper
• Yarrow
• Garlic