Mosquitoes, ticks and fleas can ruin a otherwise good day, but reaching for your own bug spray could land your dog in the ER. Here’s how to safely rescue your four-legged hiking companion.
Like humans, dogs need bug spray, but the wrong stuff can be deadly (Photo: ирина Местьерякова/Getty Images)
Published on June 19, 2026 05:09 am
Summer is prime for dog-friendly outdoor adventures, from hiking on scenic trails to spending evenings by the river. But the warmer weather also brings with it a less attractive companion: mosquitoes. Just as humans need bug spray before heading out into skater country, our furry friends can also benefit from using insect repellent.
itchy bites on one side, These dangerous insects also pose a threat to dogs by spreading heartworm disease – a potentially serious, even fatal condition.
“Mosquitoes are known as a nuisance in America, but they can also spread deadly heartworm disease to our dogs,” explains Stephanie Montgomery, veterinarian and CEO of the AKC Canine Health Foundation. Outside. “Fortunately, there are some simple precautions that can help keep your dog safe.”
Before you head out on your next summer adventure with your furry friend, be sure to keep them safe by following these simple rules.
Use proper heartworm prevention
Heartworm disease in dogs is a serious, potentially fatal condition that is spread through mosquito bites. After a dog swallows heartworm larvae, the parasite can grow up to a foot long and live in the heart, lungs and surrounding blood vessels, according to American Heartworm Society.
While heartworm prevention products don’t keep mosquitoes away, Montgomery says these medications kill heartworm larvae transmitted by mosquitoes before they can cause disease.
“Consult with your veterinarian about the best option for you and your dog,” she said.
Human insect repellents can be dangerous for dogs
“Never apply human insect repellent products like DEET to your dogs; these products can be toxic if swallowed, and it’s no secret that most dogs love to lick their fur and paws,” Montgomery said.
There are a handful of dog-friendly bug sprays available, including Wondercide Flea, Tick, and Mosquito Spray And Nantucket Spider Bug Repellent for Dogs. Both products use natural essential oils and are formulated without ingredients that may irritate dogs. Always ask your veterinarian about approved mosquito repellent products.
Mosquitoes hate citrus fruits etc. Animal Humane Society It is recommended to rub citrus fruits such as lemon onto your dog’s coat. You can also plant mosquito repellent herbs like basil, catnip, lemon balm and rosemary in your yard to ward off insects.
When in doubt, leave it out
Be it a bucket, pool or pond, stagnant water is a breeding ground for mosquitoes.
“You can help yourself and your dog by checking for standing water at home, where mosquitoes breed,” Montgomery said. “Check and empty places such as birdbaths, flower pots, clogged gutters, outdoor furniture covers, and other areas where water may accumulate.”
It has to be cut – don’t panic
If your dog does get bit, Montgomery says not to panic.
“Most mosquito bites cause only mild irritation. Just try to discourage scratching, chewing or licking, which can aggravate irritation and lead to infection,” he said. “If you notice significant swelling, persistent itching, hives, facial swelling, or any other concerning reaction, contact your veterinarian for guidance.”
Avoid using human hydrocortisone cream or spray unless specifically directed by your veterinarian.
