
Candles can pose a risk to cats, especially those containing essential oils. While natural wax candles emit low levels of fumes and fragrances, making them fairly safe when burnt occasionally and for a short time, certain essential oils can be toxic to cats, leading to respiratory issues, allergies, vomiting, diarrhoea, liver damage, and neurological issues. Therefore, it is important to be aware of the ingredients in candles and take precautions to ensure the safety of cats in the household.
Do essential oil candles hurt cats?
| Characteristics | Values |
|---|---|
| Toxic Fumes | Candles, especially those made from paraffin, can release toxic fumes when burned. Paraffin, a byproduct of petroleum, can emit volatile organic compounds (VOCs) and other toxins that could be harmful to cats if inhaled over time. |
| Toxic Oils | Certain essential oils, such as eucalyptus, tea tree, citrus, bitter almond, and wintergreen, can be toxic to cats, leading to respiratory issues, allergies, vomiting, diarrhea, liver damage, and neurological issues. |
| Fire Hazards | Cats may accidentally knock over candles, posing a risk of burns and starting fires. |
| Health Concerns | Paraffin candles can contribute to poor indoor air quality, affecting cats with pre-existing respiratory conditions. |
| Ingestion Hazards | Cats may ingest essential oils through grooming if the oil settles on their fur or skin. Ingesting concentrated oils can lead to gastrointestinal issues and neurological effects. |
| Air Quality | Maintaining good air quality is vital when using candles. Utilize air purifiers and ensure rooms are well-ventilated to minimize the accumulation of harmful substances. |
| Placement | Place candles on stable surfaces out of the cat's reach to prevent accidental ingestion or knocking over. |
| Supervision | Never leave candles burning unattended, especially with pets in the home. Extinguish candles when leaving the room. |
| Alternative Options | Opt for candles made from natural materials like beeswax, which burn cleaner and are non-toxic. Unscented candles can also eliminate the risk of toxic fragrances. |
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What You'll Learn

Toxic essential oils to avoid
Essential oils are volatile organic constituents of plants that contribute to fragrance and taste. They are commonly used in aromatherapy, insecticides, personal care products, flavourings, herbal remedies, and liquid potpourri. However, while essential oils may be beneficial to humans, they can be toxic to cats.
Cats are susceptible to potential toxicity from essential oils due to the way their liver functions. Their livers lack an essential enzyme, making it difficult to metabolize and eliminate certain toxins like essential oils. Cats are also very sensitive to phenols and phenolic compounds, which some essential oils contain.
The risk of toxicity is increased if cats have access to pure oil, either by ingestion or through skin contact. Symptoms of essential oil poisoning include vomiting, diarrhoea, respiratory issues, liver damage, and neurological signs such as tremors and balance issues.
- Eucalyptus
- Tea tree
- Citrus oils (including bergamot)
- Wintergreen
- Sweet birch
- Pine oils
- Ylang Ylang
- Peppermint
- Cinnamon
- Pennyroyal
- Clove
To minimize the risk of toxicity, cat owners should opt for candles made from natural materials, such as beeswax, and choose unscented candles or fragrances that are known to be safe for cats, like vanilla. It is also important to ensure that candles are placed out of reach of cats and are never left burning unattended.
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Toxic fumes and fire hazards
Candles can release toxic fumes that are harmful to cats. Paraffin candles, for example, can emit volatile organic compounds (VOCs) and other toxins that can be dangerous to cats if inhaled over time. The combustion reaction releases toxins into the air, which can have negative side effects on cats. Cats with pre-existing respiratory conditions are particularly vulnerable to the poor indoor air quality caused by paraffin candles.
Scented candles may contain essential oils or fragrances that are toxic to cats, leading to respiratory issues or allergic reactions. Oils such as eucalyptus, tea tree, citrus oils, and bitter almond can cause adverse effects in cats, including vomiting, diarrhoea, dermatitis, and respiratory and digestive issues. Even if cats do not ingest the oil directly, it can settle on surfaces and be ingested when they groom themselves.
The concentration of oils in the air is typically low, but it is higher close to the ground where cats are, increasing the likelihood of inhalation and ingestion. Cats with underlying respiratory issues are at greater risk, and even oils that are not highly toxic can irritate the respiratory tract and damage the small airways and alveoli.
To minimise the risk of toxic fumes, cat owners should opt for candles made from natural materials, such as beeswax, which burn cleaner and are non-toxic. Unscented candles are also a safer alternative, as they eliminate the risk posed by toxic fragrances. It is important to maintain good air quality by using air purifiers and ensuring rooms are well-ventilated to reduce the accumulation of harmful substances.
In addition to the risks posed by toxic fumes, candles also present a fire hazard. Cats may accidentally knock over candles, leading to burns or the potential start of a fire. It is important to place candles on stable surfaces out of reach of cats and to never leave them burning unattended, especially in a home with pets.
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Health concerns and respiratory issues
The combustion of candles releases toxins into the air, and cats are more susceptible to inhaling these toxins due to their small size and proximity to the ground. As such, it is crucial to maintain good air quality by utilizing air purifiers and ensuring proper ventilation.
Some essential oils, such as eucalyptus, tea tree, and citrus oils, are known to be toxic to cats and can cause respiratory issues or allergic reactions. Even oils that are not highly toxic can irritate the respiratory tract and trigger bronchial spasms or damage the small airways and alveoli. Cats with pre-existing respiratory conditions, such as asthma, are at an even higher risk and should be kept away from any scented candles or essential oil products.
The risks associated with essential oils are heightened if cats have access to pure oil, as is the case with essential oil diffusers or incense burners. Cats that lick cold oil from burners may suffer severe chemical burns on their tongues. Ingesting toxic oils can also cause skin irritation and gastrointestinal issues, regardless of temperature.
To minimize the potential health risks to cats, it is recommended to opt for unscented candles made from natural materials like beeswax, which burn cleaner and are non-toxic. Maintaining a secure placement of candles, out of the reach of curious cats, and ensuring proper ventilation during and after burning candles are also important precautions to take.
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Safe alternatives to essential oil candles
Essential oil candles can be harmful to cats, so it is important to consider safe alternatives. Cats can be sensitive to fragrances commonly found in candles, and some essential oils are poisonous to cats. Open candle flames and cats do not mix, as cats are known for their curiosity and agility, which could lead them to knock over candles. Here are some safe alternatives to essential oil candles:
Unscented Candles
Choosing unscented candles can eliminate the risk posed by toxic fragrances, allowing your cat to breathe easy while you enjoy the ambiance of candlelight.
Battery-powered Candles and Fairy Lights
These pet-safe options are long-lasting and pretty. They eliminate the risk of fire hazards and burns, ensuring your cat's safety.
Natural Wax Candles
Natural wax candles, such as those made from beeswax, emit very low levels of fumes and fragrances, making them fairly safe when burnt occasionally for short periods. However, open flames should still be managed carefully, especially for cats with respiratory issues.
Air Purification
Maintaining good air quality is crucial when using candles. Utilize air purifiers and ensure rooms are well-ventilated to minimize the accumulation of harmful substances.
Pet-Friendly Scents
When making your own candles, consider using pet-friendly essential oils such as lavender, chamomile, vanilla, and peppermint in moderation. These scents can create a soothing, warm, and inviting atmosphere while ensuring the safety of your cat.
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Placement and supervision of candles
When placing and supervising candles around cats, there are several key considerations to keep in mind. Firstly, it is important to choose the right type of candle. Paraffin candles, for example, should be avoided as they emit toxic fumes that can be harmful to both cats and humans. Instead, opt for candles made from natural waxes such as beeswax, soy wax, coconut wax, or vegetable-based wax, which are less likely to release harmful toxins.
Another important consideration is the placement of the candles. Always place candles out of reach of cats, on stable surfaces where they cannot be knocked over. Cats are naturally curious and agile, so it is crucial to ensure they cannot accidentally knock over the candle, causing a fire hazard or potentially burning themselves. Using hurricane lamps or enclosed lanterns can provide an additional layer of protection. Keeping candles inside a tray of water is also a good safety measure, as it will immediately extinguish the flame if knocked over.
In terms of supervision, it is crucial never to leave a lit candle unattended, especially in the presence of pets. Always extinguish candles before leaving the room, and if you must leave them burning, ensure the room is well-ventilated to minimise the accumulation of potentially harmful substances. Maintaining good air quality is vital, so consider using air purifiers or keeping windows open to provide fresh air circulation.
Additionally, be mindful of your cat's preferences and sensitivities. Cats can be very particular about scents, and strong smells close to their food or litter box can lead to stress-related illnesses. While your cat may tolerate most scents in small quantities, some odours can be surprisingly unpleasant to them. Natural wax candles with mild fragrances or unscented candles are generally safer options and can help minimise any potential respiratory issues or allergies.
Finally, be cautious with essential oils. Some essential oils, such as eucalyptus, tea tree, citrus oils, and lavender, can be toxic to cats, especially in their pure forms. If using scented candles, ensure they do not contain harmful essential oils, and always keep them out of your cat's reach to prevent ingestion or direct contact. Overall, taking these precautions into account can help ensure the safe placement and supervision of candles in households with cats.
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Frequently asked questions
Yes, essential oil candles can be dangerous to cats, especially if they contain oils such as eucalyptus, tea tree, citrus, bitter almond, or lavender. These oils can cause respiratory issues, vomiting, diarrhoea, liver damage, and neurological issues.
If your cat has been exposed to essential oil candles, remove them from the room and bathe them with a degreasing soap like Dawn dishwashing soap to remove any residue. You should also air out your home or take your cat to stay somewhere else for a few days, and steam clean any soft furnishings to remove the oil residue.
Vanilla-scented candles are reported to be liked by cats and are generally considered safe for them. Beeswax candles are also a good option as they burn cleaner and are non-toxic.
Signs of toxicity depend on the essential oil your cat has been exposed to, but common symptoms include vomiting, diarrhoea, respiratory issues, liver damage, and neurological issues such as tremors and balance problems.
Yes, you can opt for unscented candles or candles made from natural materials such as beeswax. It is also important to ensure that candles are placed on stable surfaces out of your cat's reach and that they are never left burning unattended.











































