
Cats and candles can be a dangerous combination. While fire hazards are an obvious concern, the scent of candles can also be toxic to cats. Cats lack certain liver enzymes, which means that some essential oils can be harmful if ingested or inhaled. Peppermint is one such scent that can be toxic to cats, causing vomiting and other adverse side effects. However, some cat owners continue to burn peppermint candles, keeping them out of reach of their cats.
| Characteristics | Values |
|---|---|
| Fire hazard | Cats could knock over the candle or burn themselves |
| Respiratory distress | Essential oils can cause respiratory distress in cats |
| Toxicity | Peppermint candles contain oils that can be toxic to cats if ingested or inhaled |
| Allergies/asthma | Cats with allergies or asthma may have adverse side effects |
| Gastrointestinal issues | Cats may experience gastrointestinal issues if they ingest candle wax |
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What You'll Learn

Peppermint oil is toxic to cats
While candles can be a great way to create a cosy atmosphere or cover up unpleasant odours, it's important to exercise caution if you have pets, especially cats. This is because cats lack certain liver enzymes that are necessary to break down some compounds commonly found in essential oils, which can lead to toxicity.
The toxicity of peppermint oil in cats is primarily due to the presence of phenols, which are toxic to their liver and kidneys. Phenols are a type of chemical compound that can cause liver damage and other health issues in cats. When cats are exposed to peppermint oil, the phenols are absorbed into their bloodstream and distributed throughout their bodies, including to their vital organs.
Symptoms of peppermint oil toxicity in cats may include drooling, vomiting, diarrhoea, lethargy, difficulty breathing, and seizures. In severe cases, peppermint oil poisoning can even be fatal. If you suspect that your cat has been exposed to peppermint oil or is displaying any of these symptoms, it is important to seek veterinary attention immediately.
To prevent peppermint oil toxicity in cats, it is crucial to avoid using peppermint candles or any other products containing peppermint oil in spaces accessible to your cat. This includes not only your living space but also any areas where your cat may roam, such as balconies or gardens. It is also important to keep peppermint oil and other essential oils out of reach of your cat to avoid accidental ingestion or skin contact.
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Candles can be a fire hazard
While there is much discussion about the potential toxicity of peppermint candles to cats, another important consideration is the fire hazard that candles pose in a household with cats. Cats are curious creatures and can easily knock over a lit candle, potentially starting a fire. They could also burn themselves by accidentally coming into contact with the flame.
To minimise the risk of fire, it is crucial to take several precautions when burning candles in a home with cats. Firstly, always ensure that candles are placed in a secure location where cats cannot reach them. This could include burning candles on high shelves or in closed rooms that cats cannot access. By keeping candles out of your cat's reach, you significantly reduce the risk of accidental knocks or burns.
Additionally, always supervise lit candles and never leave them unattended. This is especially important in households with cats, as you need to ensure they do not come into contact with the flame or knock over the candle while you are not around. If you cannot supervise the candle, it is best to extinguish it before leaving the room.
Another safety measure is to use appropriate candleholders that can catch any dripping wax. This helps to prevent hot wax from spilling onto surfaces or your cat's fur, reducing the risk of fire or injury. Also, keep flammable materials, such as curtains or paper, away from lit candles to prevent accidental ignition.
While enjoying candles in your home, it is essential to prioritise fire safety, especially with cats in the household. By taking these precautions, you can significantly reduce the risk of fire hazards and create a safer environment for both you and your feline companions.
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Respiratory distress in cats
While there is conflicting information on whether peppermint candles are toxic to cats, it is known that essential oils can be harmful to cats if ingested or inhaled over time. Cats lack certain liver enzymes to break down the compounds in essential oils, which can lead to toxicity. Eucalyptus oil, in particular, is noted to be toxic to cats.
Signs of respiratory distress in cats include abnormal or increased respiratory sounds, such as coughing or noisy breathing. A cat experiencing respiratory distress may also exhibit increased respiratory rates, blue discolouration of the skin and mucous membranes due to poor oxygen delivery, and, in some cases, pink, foamy fluid from the mouth or nose.
Veterinarians will typically perform a blood gas analysis to diagnose ARDS, along with other tests such as complete blood cell counts, serum biochemistry profiles, urinalysis, chest radiographs (X-rays), and echocardiograms (ultrasound of the heart). Treatment involves supporting the cat's lung function with supplemental oxygen, which may be administered through an oxygen cage or a line directly into the nasal passages. In severe cases, mechanical ventilation may be required, involving anaesthesia and a tube inserted into the trachea.
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Toxicity symptoms
While there is not enough oil in most candles to be toxic to cats, some cats may experience adverse side effects if they have allergies or asthma. The American Society for the Prevention of Cruelty to Animals (ASPCA) warns that essential oils, especially in their pure and undiluted form, can be hazardous to pets. Cats lack certain liver enzymes to break down compounds in essential oils, which can lead to toxicity.
In addition to respiratory issues, cats may experience gastrointestinal problems if they ingest candle wax or get their paws in it. The oils in candles can also be absorbed through the skin, leading to potential health issues if a cat brushes against furniture or licks its fur after coming into contact with the oils.
It is important to note that some cats may be more sensitive to certain scents than others, and it is always a good idea to consult a veterinarian for specific advice and to keep candles out of reach of cats to avoid any potential hazards.
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Safe alternatives to peppermint candles
While some sources claim that peppermint candles are toxic to cats, others suggest that they are safe in small quantities. To err on the side of caution, it is best to opt for safe alternatives to peppermint candles when creating a pleasant atmosphere in your home if you have cats.
One simple approach is to use candles in closed rooms or outdoors, away from your cats. If you do choose to burn candles indoors, ensure that your cats cannot access the room, and always supervise them when candles are lit. Additionally, opt for natural wax candles, such as those made from beeswax, soy wax, or vegetable-based wax, as they emit lower levels of fumes and fragrances and do not contain toxic pollutants.
Another option is to choose alternative sources of ambient lighting and fragrances. Battery-powered candles and fairy lights are pet-safe alternatives that provide a similar ambiance without the risk of fire or toxic fumes. LED candles are another safe option, as they eliminate the risk of open flames.
If you prefer the fragrance of scented candles, look for candles made from phthalate-free natural fragrances instead of artificial scents. Avoid candles containing essential oils, as these can be harmful to cats if ingested or inhaled. Some common essential oils that are toxic to cats include cinnamon, citrus, eucalyptus, lavender, peppermint, and tea tree oil.
To summarize, safe alternatives to peppermint candles include unscented natural wax candles, battery-powered candles, fairy lights, and LED candles. When using any type of candle, always take extra precautions to prevent fire hazards and manage open flames carefully, especially if your cats have underlying respiratory issues.
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Frequently asked questions
Peppermint oil is toxic to cats and can cause vomiting and gastrointestinal issues if ingested or absorbed through the skin. Cats lack certain liver enzymes to break down compounds in essential oils, which can lead to toxicity.
Yes, candles containing eucalyptus, tea tree, citrus oils, cinnamon, and jasmine are toxic to cats. Strong floral fragrances can also cause respiratory distress in cats.
Vanilla-scented candles are considered safe for cats. However, it is always good to consult a veterinarian before bringing anything new into a home with pets.











































