Sleeping with earplugs is generally safe for most people. The risks are real but manageable: earwax buildup, bacterial growth, and ear infections. With basic hygiene and proper use, nightly earplug wearers can avoid most problems.
Why Earplugs Cause Earwax Buildup
Your ear canal has a self-cleaning system. Natural jaw movement, from talking, chewing, and yawning, slowly pushes earwax outward where it dries up and falls away. Earplugs disrupt this process by physically blocking that migration path. Over time, wax gets compressed deeper into the canal instead of working its way out.
Frequent insertion of objects into the ear canal can also increase wax production and change its consistency. People who routinely wear earplugs or hearing aids are among the most common groups to develop impacted earwax. When wax builds up enough to form a plug, it can cause temporary hearing loss, a feeling of fullness in the ear, ringing (tinnitus), or ear pain. None of these are permanent if addressed, but they’re uncomfortable and surprisingly common among habitual earplug users.
You don’t need to stop using earplugs to prevent this. Periodically checking for wax buildup and using over-the-counter ear drops to soften wax every couple of weeks is usually enough. Avoid cotton swabs, which push wax deeper, the same problem earplugs create.
Bacterial Growth and Ear Infections
The bigger concern with nightly earplug use is infection. Earplugs create a warm, moist environment inside the ear canal, which is ideal for bacteria. Foam earplugs are especially problematic because their porous material traps moisture and becomes a breeding ground for microbes. The two most common bacteria involved in outer ear infections are Pseudomonas aeruginosa and Staphylococcus aureus, both of which thrive in exactly these conditions.
An outer ear infection (sometimes called swimmer’s ear) typically starts with itching and mild discomfort. Pain worsens when you tug on your earlobe or press on the small flap in front of your ear canal. You might notice discharge, a feeling of fullness, or muffled hearing. The pain often feels out of proportion to what’s actually happening, because the skin lining the ear canal is extremely thin and sensitive. In moderate cases, swelling partially blocks the canal. In severe cases, the canal swells shut entirely, and you may develop fever and swollen lymph nodes near the ear.
Most outer ear infections clear up with prescription ear drops within a week or so, but untreated infections can lead to lasting hearing damage. The simplest way to prevent them is keeping your earplugs clean, or in the case of foam plugs, replacing them regularly.
How to Keep Earplugs Clean
The cleaning method depends on the material. Foam earplugs should be wiped gently but never soaked in water, as moisture damages the material and reduces their ability to block sound. Because foam is difficult to fully sanitize, treat disposable foam plugs as disposable. Replace them after a few uses rather than trying to extend their life.
Silicone earplugs are more durable and easier to maintain. You can rinse them in water or wipe them with a damp cloth and mild soap. If your earplugs have internal filters or electronic components, remove the silicone tips and clean those separately. Wipe the body of the plug with a damp cloth rather than submerging it.
Signs your earplugs need cleaning or replacing: visible earwax or dirt, discoloration, a sticky texture, or any unpleasant smell. If you notice any of these, bacteria has likely already built up. Store earplugs in a clean, dry case rather than loose on a nightstand or in a drawer.
Proper Insertion Matters
Poorly inserted earplugs either fail to block sound (making the whole exercise pointless) or get pushed in too deep, increasing pressure on the ear canal and worsening wax compaction. The CDC’s recommended technique for foam earplugs is straightforward:
- Roll the plug into a thin, compressed cylinder with clean fingers.
- Pull your ear up and back with the opposite hand to straighten the ear canal, then slide the plug in.
- Hold it in place for 20 to 30 seconds while it expands. Talk out loud during this time. Your voice should sound noticeably muffled once the seal forms.
To check the fit, cup your hands tightly over both ears. If sound drops significantly with your hands in place, the earplugs aren’t sealing well and need to be reinserted. Most of the foam body should sit inside the canal, not sticking out. Starting with clean hands is important, since inserting earplugs with dirty fingers pushes bacteria directly into the ear canal.
Can You Still Hear Alarms?
A common worry is whether earplugs will block the sound of a smoke detector or alarm clock. Standard foam earplugs carry a noise reduction rating (NRR) of around 22 to 33 decibels, but the real-world reduction is typically lower, closer to half the listed NRR. A residential smoke alarm produces about 85 decibels at 10 feet. Even with earplugs rated at NRR 33, you’d still hear an effective level well above 65 decibels, which is roughly the volume of a normal conversation. Most people will wake to a smoke alarm while wearing standard earplugs.
That said, individual hearing varies. If you have any degree of hearing loss, earplugs could reduce alarm sounds below your waking threshold. In that situation, a vibrating alarm placed under your pillow or a visual strobe alarm offers a reliable backup.
Who Should Be More Cautious
Some people face higher risks from regular earplug use. If you produce excessive earwax naturally, earplugs will accelerate the problem. People with narrow or unusually shaped ear canals are also more prone to impaction because there’s less room for wax to move past the plug. If you’ve had ear tubes placed or have a perforated eardrum, inserting earplugs can trap moisture or bacteria in the middle ear, making infection more likely and potentially more serious.
People who already experience tinnitus sometimes find that earplugs make the ringing more noticeable. In a quieter environment with blocked external sound, your brain turns up its internal volume, so to speak. This doesn’t cause new tinnitus, but it can make existing symptoms harder to ignore at bedtime. White noise machines are often a better option for light sleepers who also deal with ringing in the ears.
Choosing the Right Type
Foam earplugs are the cheapest and most widely available option. They conform well to different ear canal shapes and offer the highest noise reduction ratings. The tradeoff is hygiene: they’re hard to clean and should be replaced frequently, ideally after every few nights of use.
Silicone earplugs last longer and are easier to sanitize. Some sit inside the canal like foam plugs, while others mold over the ear canal opening without entering it, reducing wax compaction. They typically block slightly less noise than foam but are more comfortable for side sleepers because they don’t protrude as much.
Wax earplugs are another option that molds to the outer ear. They create a seal without deep insertion, which minimizes both wax buildup and bacterial risks inside the canal. The noise reduction is modest compared to foam, but for many sleepers it’s sufficient to muffle a partner’s snoring or street noise.
Whichever type you use, the core routine is the same: clean hands, clean earplugs, and regular checks for wax buildup. For most people, that’s all it takes to use earplugs safely every night for years.