Prep first
Before you start
- Rinse a fresh splash with plenty of plain water.
- Never mix pool chemicals with each other or with any other product.
- Wear goggles and gloves and work in fresh air when handling pool chemicals.
Chlorine on electronics usually comes from a pool splash or a dropped tablet, and a fresh mark comes off far easier than residue that has dried for hours. Chlorine itself is a no on electronics, so the job is lifting the film with fresh water and then drying the device all the way through. If liquid got inside an opening, that's a repair question rather than a cleaning one.
Chlorine tablet stains on a screen or case lift best with a barely damp microfiber cloth, never a spray. If you're working on a phone speaker grill, check for grit before you wipe so it doesn't get pushed deeper. If the residue stays after drying, stop and let a repair shop look at it rather than scrubbing harder.
Before you start
What electronics & screens can take
Use with care2
- Water
- Solvents (alcohol, spot removers)
Avoid4
- Soaking
- Chlorine bleach
- Oxygen bleach
- Scrubbing and abrasives
4 items
What you'll need
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- Soft, lint-free clothWipes off water and residue without scratching the surface or leaving fibers behind. (opens Amazon)
- Plain fresh waterPlain fresh water on a soft cloth is the only rinse, and only with care.
- 70% isopropyl alcoholLifts a film that water leaves behind; use it sparingly and test first. (opens Amazon)
- Dry lint-free clothDries the device and removes the last traces of moisture or alcohol. (opens Amazon)
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6 steps
Step by step
Step 1 of 6
Wipe off the water
Wipe the device with a soft, nonabrasive, lint-free cloth to lift off the water and any loose chlorine. Keep the cloth only slightly damp, and press gently around speaker grills, ports and other openings so nothing gets inside.
Tip. Pool chemicals are harsh, so wear goggles and gloves and work in fresh air while you handle them.
Careful. Don't spray cleaner directly onto the device; spray the cloth instead.
Step 2 of 6
Rinse it under fresh water
If you have a smartwatch from Series 2 and later, rinse it gently under lightly running, warm, fresh water after swimming. For any other device, check the manual before you rinse it at all.
Careful. Never submerge the device.
Step 3 of 6
Check the openings for liquid
Look at the speaker grill, ports and other openings for signs that water has gotten inside. If it has, stop cleaning and get professional help rather than wiping further.
Step 4 of 6
Dry the device thoroughly
Dry the device completely with a clean, lint-free cloth. Let it sit until no moisture shows at the openings before you use it or charge it.
Tip. On a smartwatch, dry the band as well as the case.
Step 5 of 6
Wipe away a film
If a film or dull patch remains after drying, dampen a soft lint-free cloth with 70% isopropyl alcohol and wipe the spot gently. Keep the cloth barely damp so no liquid runs into the openings, and test a small hidden spot first.
Careful. Alcohol can change the color of leather, so keep it off leather cases.
Step 6 of 6
Buff off the alcohol
Go over the spot with a dry lint-free cloth so no alcohol is left on the surface. Let the device dry fully before you use it.
If you'd rather buy than mix
Best products for chlorine on electronics & screens
Look for a soft, lint-free microfiber cloth and 70% isopropyl alcohol with no added color or fragrance. Skip any product with bleach or abrasive cleaners.
Amazon Basics Microfiber Cleaning Cloths
How we picked these: each product is made for this type of stain, its maker doesn't warn against using it on electronics & screens, and its directions fit the steps above.
Finished the steps? How does it look?
Nice work. Let it dry completely and check it again in good light. Here is what done looks like:
How to tell it's really gone →A faint mark usually needs one more round, not a stronger product.
Heavy buildup usually takes more than one round.
Heavy or long-standing buildup →When to call a professional →How to tell it's working
The spot is gone when the surface looks the same as the rest of the device, with no film or dull patch left. If you can feel a rough or sticky area, repeat the wipe with a barely damp cloth and dry it again.
What changes for yours
Adjust for your electronics & screens
Smartwatch
After swimming, rinse a smartwatch from Series 2 and later under lightly running, warm, fresh water, then dry it thoroughly. Earlier models should skip that rinse and get a dry, lint-free wipe instead.
If the watch touched soap, solvents or any substance other than water, clean it with fresh warm water and dry it with a lint-free cloth. Dry the watch and the band thoroughly afterward.
Mixed-reality headset
On a mixed-reality headset, skip the alcohol step: the cleaning products that are off-limits on displays, solvents included, may damage it. Wipe it with a soft, lint-free cloth dampened with fresh water only.
Wipe the frame and lenses with a dry cloth afterward, and check the manual before you use any other product.
Leather phone case
Leather cases can pick up stains from water, oil, makeup and dyed materials like denim. Skip the alcohol step on leather, and wipe the case with a dry lint-free cloth instead.
Let it dry fully before you put the phone back in, and don't scrub a mark that has already set. The set-in section below explains what's realistic.
Speaker grill
The guidance for this device doesn't cover speaker grills, so stick to the gentlest options. Wipe the outside with a soft, dry, lint-free cloth, and only slightly damp if the mark needs it.
Skip any air or spray for clearing the holes, and don't push moisture deeper into them. If you think liquid got inside, check the device's manual before you try anything else.
Heavy or long-standing buildup
A mark that has been on the device for a while is harder to lift, so start with the wipe and rinse before anything else. Work gently and check the surface after each pass rather than rushing to a stronger step.
Once the mark has dried, a film can still show, and the alcohol step is the strongest treatment this device can take. Use it once on a barely damp cloth, then dry the spot completely.
If it's still there after that, the realistic result is a faint mark rather than a perfect finish. Don't keep scrubbing or reach for bleach or abrasives, because the device can't take them.
Vinegar, baking soda, peroxide and more
Do home remedies work on chlorine on electronics & screens?
Most home remedies from fabric guides don't carry over to electronics, and several are harmful here. Stick to a damp, fresh-water wipe and dry the device thoroughly, since bleach, peroxide and abrasives can damage it.
Works1Avoid5
What makes it worse
Mistakes to avoid
Don't reach for bleach
Bleach is the first thing most people grab after a chlorine splash, and it's the one product the device can't take. Keep bleach and peroxide well away from it, even for a quick test.
Don't use household cleaners or ammonia
Window cleaners, household cleaners, aerosol sprays and ammonia are all off-limits, even for a quick wipe-down. A cloth dampened with fresh water is the safe default for everyday marks.
Don't dry it with heat or compressed air
Heat, compressed air and sprays can push water deeper into the device. Let it dry on its own with a lint-free cloth instead.
Don't scrub with rough material
Abrasive cloths and paper towels can mark the surface, so the soft lint-free cloth is the only thing that should touch it. Gentle, repeated wiping works better than pressure.
When to call a professional
If liquid has made its way inside the device, stop cleaning and get help from an authorized service provider. For any other brand, follow the device's manual before you attempt anything beyond a wipe.
Questions
How do I remove chlorine tablet stains from electronics?
Wipe the device with a soft, lint-free cloth dampened with fresh water, then dry it thoroughly. Skip bleach and every other strong cleaner, since the device can't take them.
Is rubbing alcohol safe on electronics?
Yes, but only 70% isopropyl alcohol, on a barely damp soft lint-free cloth, and only for a film that water doesn't lift. Test a small hidden spot first, and skip it on the headset and on leather cases.
Can I use vinegar to neutralize chlorine on my device?
No. Never add vinegar to chlorine, because it can release toxic gas. Skip vinegar on a device, since fresh water is the only rinse that's needed.
What if water gets inside my device?
Stop cleaning and get help from an authorized service provider. Don't try to dry it with heat or compressed air, since that can push water further in.
Why is there a blue-green mark near my pool or sink?
Blue-green marks are usually dissolved copper, often from corrosive water attacking copper plumbing. That makes them a different problem from a chlorine mark, so the steps here won't target the cause.
Is club soda a good rinse for a device?
No, club soda isn't a rinse for a device, so skip it. Plain fresh water is the only rinse to use. If you aren't sure a liquid is safe, don't put it on the device at all.
Chlorine on other materials
Other stains on electronics & screens
Start from the bigger picture
How we know this
Every method, amount and warning here comes from university extension services, industry bodies and product makers. We read them, check every step for unsafe combinations and changed amounts, and write it up so you can follow it.