How to Treat Dog Swimmer's Ear With Home Rinses

If your dog loves splashing through lakes or diving into the pool, all that fun in the water can sometimes trap moisture in the ears and cause an ear infection — commonly known as swimmer’s ear. When water lingers in the ear canal, it can create the perfect environment for irritation, especially in dogs with floppy ears or active outdoor routines.

The good news: with the right at-home care, it’s often easy to keep your dog’s ears clean, dry, and comfortable after water exposure. Simple steps like using a gentle ear rinse and building a consistent post-swim routine can go a long way in preventing buildup and supporting overall ear health.

“Swimmer’s ear” is a term commonly used to describe irritation that occurs when water gets trapped inside the ear canal.¹ While the condition is widely recognized in humans, dogs can experience similar issues, especially those that spend a lot of time in water.

A dog’s ear canal has a unique L-shaped structure, which makes it easier for moisture to get trapped rather than drain naturally.² When that moisture mixes with earwax, debris, dirt, or environmental particles, it can irritate the ear canal and may lead to an ear infection, referred to as otitis externa by veterinarians.

Common signs of swimmer’s ear in dogs may include³:

• Redness inside the ear
• Increased wax buildup
• Mild dog ear discharge
• Head shaking
• Scratching at the ears
• Sensitivity when the ears are touched

It’s important to note that swimmer’s ear doesn’t always mean a bacterial or fungal infection is present. Often, it starts as irritation from excess moisture and debris in the ear canal. However, if the ear's environment remains damp, irritation may worsen over time. That’s why many veterinarians recommend keeping ears clean and dry after water exposure as part of regular dog ear treatment and maintenance.

Dogs that swim frequently (or simply enjoy a regular bath routine) may benefit from a gentle ear rinse as part of their regular grooming. An antimicrobial ear rinse for pets helps support ear health in several ways.

Ear rinses can help flush out:

• Trapped water
• Dirt and debris
• Wax buildup
• Environmental particles

Removing these materials can help restore a cleaner ear environment after swimming or bathing.

Moisture inside the ear canal can create conditions where unwanted microbes may thrive. Antimicrobial rinses help reduce surface microbes that naturally occur in damp environments.

This doesn’t mean the rinse is treating a medical condition. Instead, it helps maintain ear cleanliness, keeping the ear canal refreshed and comfortable.

Regular ear rinsing can be particularly helpful for:

• Dogs with floppy ears
• Dogs that swim frequently
• Dogs with thick ear hair
• Dogs that enjoy outdoor activities

By supporting routine ear care, rinses help remove buildup before it becomes uncomfortable for your pup.

Another benefit of using an antimicrobial ear rinse is the refreshing cleanse it provides after outdoor or water activity. Swimming environments like lakes and oceans can expose your dog’s ears to sand, plant debris, and other environmental particles that may linger inside the ear canal.

A gentle dog ear rinse helps flush away these materials, alleviating discomfort and supporting a cleaner ear environment.

Ear drops can be used at any point in a dog’s care routine, but if you have a pup that loves water, you want to prioritize rinses after water exposure.

One of the best times to use an ear rinse is immediately after water activity. Swimming in lakes and rivers (or a backyard pool) may leave moisture inside the ear canal. Even a regular bath can allow water to settle inside the ear.

Using a dog ear rinse after these activities helps remove trapped water before irritation can develop. This is particularly helpful for dogs that:

• Swim regularly
• Play in sprinklers or pools
• Spend time at the beach

A quick ear rinse after water exposure helps keep the ear canal clean between activities.

Sometimes, swimmer’s ear symptoms begin subtly. You might notice:

• Your dog is shaking their head after swimming
• Mild redness inside the ear
• Occasional scratching

Using an ear rinse at the first signs of mild irritation can help cleanse the ear canal and remove debris that may be contributing to discomfort. Think of it as a reset for the ear environment after moisture exposure.

Many pet owners include ear rinsing as part of a weekly or post-swim grooming routine. For dogs that spend a lot of time in water, consistency is especially important. Just like brushing your dog’s coat or cleaning their muddy paws, rinsing their ears should become a natural part of their overall grooming process.

This simple habit can make a big difference for active dogs who spend their days splashing and enjoying the water.

Using an ear rinse may sound intimidating at first, but most dogs tolerate it well when introduced calmly and gently. Here’s a simple step-by-step approach for using dog ear drops safely at home:

Before beginning, twist open the dropper nozzle as directed on the product label. You may also want to keep a towel nearby, since dogs often shake their heads after ear cleaning. This is perfectly normal and helps expel loosened debris.

Creating a calm environment can also help your dog stay relaxed during the process.

Gently lift your dog’s ear flap to expose the ear canal opening. Apply enough rinse to thoroughly saturate the ear canal, following the label directions.

Avoid forcing the applicator deep into the ear. Simply allow the rinse to flow into the canal opening. This helps the solution reach the areas where moisture and debris may be present.

Once the ear canal is filled with the rinse, gently massage the base of your dog’s ear. You may hear a soft squishing sound as the solution moves inside the canal. This is normal and indicates the rinse is distributing throughout the ear.

Massaging helps:

• Loosen wax buildup
• Lift debris
• Disperse trapped moisture

Keep the massage gentle and brief. Usually, about 20 to 30 seconds is sufficient.

Most ear rinse products recommend use once or twice daily during periods of active ear cleaning. Always follow the directions on the label when using any dog ear treatment product.

While mild irritation from moisture is common, some ear symptoms may indicate a more serious issue that requires veterinary attention.

Contact your veterinarian if you notice⁴:

• Strong or foul odor coming from the ear
• Thick or colored discharge
• Intense head shaking or scratching
• Signs of pain or sensitivity when touching the ear
• Symptoms that worsen or don’t improve with routine care

These signs may indicate a condition that needs professional evaluation. When in doubt, it’s always safest to check with your vet.

Ear care is an essential part of any dog’s grooming routine, but it’s especially important for water-loving pups. A simple ear rinse is usually all it takes to maintain a healthy ear environment and avoid irritation after swimming or outdoor play.

Products like Vetericyn Plus Antimicrobial Ear Rinse are designed to support gentle ear cleansing and moisture management in everyday pet care. If your dog spends a lot of time around water (or tends to shake their head after swimming), exploring our ear care products can help keep their ears feeling fresh between vet visits.

And when your dog’s ears feel good, they can get back to what they love most: splashing, swimming, and chasing their next big adventure. Shop all our dog care products today.