Citronella is a popular natural ingredient in candles, oils, and sprays designed to repel mosquitoes. Many dog owners reach for citronella products to enjoy time outdoors without pests, but it is important to ask: Is citronella toxic to dogs? The answer is not a simple yes or no.
In general, citronella is considered non-toxic to dogs according to the ASPCA. However, the form and concentration of citronella, as well as the amount your dog is exposed to, can make a difference. Mild reactions such as skin irritation or digestive upset are possible, and some products contain additional chemicals that may be harmful. Understanding the risks helps you keep your furry friend safe while still enjoying the outdoors.
What Is Citronella?
Citronella is an essential oil derived from the leaves and stems of lemongrass plants, primarily Cymbopogon nardus or Cymbopogon winterianus. It is known for its strong, citrusy scent that masks odors attractive to mosquitoes and other insects. Citronella is used in a wide range of consumer products, including candles, torches, sprays, lotions, and even pet collars designed to curb barking. While it is generally recognized as safe for humans and pets by regulatory agencies, individual sensitivities and concentration levels can influence its safety for dogs.
Common Forms of Citronella and Their Risks
Citronella comes in many forms, each with its own potential risks for dogs. The key factor is how your dog interacts with the product: ingestion, inhalation, or skin contact. Below are the most common forms and what you should know.
Citronella Candles and Torches
The wax or oil inside citronella candles is generally not highly toxic, but it can cause mild gastrointestinal upset if a dog ingests a small amount. The bigger concern is the candle itself: if a dog knocks over a burning candle, they could suffer burns or start a fire. The smoke from citronella candles can irritate a dog’s respiratory tract, especially in confined spaces or after prolonged exposure. Always supervise your dog around lit candles and place them out of reach.
Citronella Essential Oil
Pure citronella essential oil is highly concentrated and poses the greatest risk. Ingestion can cause drooling, vomiting, diarrhea, and in large amounts, lethargy or even more serious effects like central nervous system depression. Skin contact may cause irritation, redness, or an allergic reaction in sensitive dogs. Never apply undiluted essential oil to your dog’s skin or allow them to lick it. If you use a spray containing citronella oil, choose one formulated for pets or dilute it heavily with a carrier oil or water.
Citronella Plants
Two plants are commonly called ‘citronella’: citronella grass (Cymbopogon nardus) and citronella geranium (Pelargonium citrosum). Citronella grass is the true source of the oil and is generally safe for dogs to be around. However, if a dog eats a large quantity of the plant, it may cause mild vomiting or diarrhea. Citronella geranium, on the other hand, contains geraniol and linalool, which can be more irritating. Ingesting significant amounts may lead to more pronounced digestive upset. Neither plant is considered life threatening, but it is wise to prevent your dog from chewing on them.
Citronella Collars
Citronella collars are used as a bark control device: they release a burst of citronella spray when the dog barks. The spray is startling but not toxic if a small amount gets into the mouth or nose. Some dogs may experience mild eye or nose irritation, and the spray can sometimes trigger sneezing or coughing. Overall, citronella collars are considered one of the more humane bark control options, but you should always fit them properly and monitor your dog for any adverse reactions.
Symptoms of Citronella Exposure in Dogs
Symptoms vary depending on the form and amount of exposure. With mild exposure, such as sniffing a candle or licking a small spill, you may see:
– Drooling or pawing at the mouth
– Mild vomiting or diarrhea
– Skin redness or itching at contact site
– Sneezing or coughing after inhalation
With more significant ingestion of concentrated oil, symptoms can include:
– Excessive drooling
– Persistent vomiting
– Lethargy or weakness
– Loss of coordination
– In very rare cases, seizures or difficulty breathing
If your dog shows any concerning symptoms, especially after ingesting a large amount of concentrated oil, contact your veterinarian immediately.
What to Do If Your Dog Ingests Citronella
If you suspect your dog has ingested citronella, first determine the product and amount. For small amounts from candles or diluted sprays, monitor your dog for mild gastrointestinal upset and offer fresh water. Do not induce vomiting unless specifically instructed by a vet, as some products may contain additional ingredients that could cause further damage if vomited. For ingestion of pure essential oil or if your dog shows any symptoms beyond mild stomach upset, call your veterinarian or a pet poison helpline (like the ASPCA Animal Poison Control Center) immediately. Have the product label ready to provide information on concentration and other ingredients.
Safer Alternatives for Mosquito Repellent
If you are concerned about citronella, there are dog-safe mosquito repellent options. Look for products specifically labeled as safe for pets, such as those containing geraniol, lemongrass, or cedarwood oil in very low concentrations. Always avoid products containing DEET, as it is highly toxic to dogs. You can also use physical barriers like mosquito netting over patios or strollers. For your dog’s outdoor time, consider dressing them in a lightweight, breathable mosquito-repellent fabric shirt. Preventing standing water around your yard eliminates mosquito breeding grounds without any chemicals. Always consult your veterinarian before using any new product on or around your dog.