Table of Contents
- What You’ll Need
- Step 1: Remove the Insoles and Shake Off Loose Debris
- Step 2: Prepare a Gentle Cleaning Solution
- Step 3: Hand-Wash Using the Press-and-Release Technique
- Step 4: Rinse and Remove Excess Water Without Wringing
- Step 5: Air Dry Completely—Patience Is Everything
- Step 6: Deodorize Deep-Set Odors with Baking Soda
- Troubleshooting Common Mistakes
- What to Do Next
You slip off your Hey Dudes after a long day, and there’s that smell. The memory foam insoles have absorbed months of sweat. Bacteria, and now they’re the culprit.
Now, washing them seems urgent. You’ve heard horror stories of shrunken, rock-a pain insoles… the impressive news is you can clean them thoroughly without ruining the bouncy cushioning—if you follow the right method. Here’s the lowdown on how to clean Hey Dude insoles. So they feel fresh and springy again.
TL; DR
- Never toss memory foam insoles in a washing machine or dryer—heat and agitation permanently destroy the foam’s cellular structure, leaving them flat and hard.
- Hand-wash with lukewarm water and a few drops of Dawn or pH-neutral soap, using gentle press-and-release motions to avoid delaminating the top fabric.
- Air-dry completely away from direct sunlight for up to 48 hours, and deodorize stubborn odors by sealing dry insoles in a bag with baking soda for 12–24 hours.
Key Point
- The single worst thing you can do: expose the insoles to any heat—even a warm dryer cycle. I learned this the hard way after a 10-minute tumble turned a pair into shriveled fossils.
- Memory foam acts like a sponge, so surface wiping won’t reach the deep-set bacteria that cause the notorious “Hey Dude funk.” You need to gently flush the foam, not just scrub the top.
- Drying is the real test of patience. It can take up to 48 hours, and if you put them back even slightly damp, the smell returns with a vengeance.
- A 50/50 white vinegar/water spray is an effective quick-fix odor killer between deep cleans without a full soak.
What You’ll Need
You’ll need lukewarm water (no hotter than 86°F), mild liquid soap or Dawn dish detergent, a. Worth pausing on that one. Thinking about it more, soft cloth or sponge, a clean towel, and optionally baking soda and white vinegar for deodorizing. Avoid bleach and harsh chemicals completely.
| Item | Purpose | Notes |
|---|---|---|
| Lukewarm water (<86°F) | Safe cleaning temperature | Hot water destroys foam |
| Mild pH-neutral soap or Dawn | Breaks down body oils and sweat | Avoid enzyme cleaners |
| Soft microfiber cloth or non-abrasive sponge | Press-and-release cleaning | No stiff brushes |
| Dry clean towel | Blots excess water after rinsing | Do not wring |
| Baking soda | Odor neutralizer (optional) | For deep-set funk |
| White vinegar (distilled) | Bacterial killer (optional spray) | Dilute 50/50 with water |
Step 1: Remove the Insoles and Shake Off Loose Debris
In practical terms, gently pull the insoles out of the shoes. Then tap them together outdoors to dislodge grit, sand. And dried sweat. From a practical standpoint, this step stops loose particles from grinding into the foam — and causing micro-tears during washing.
When you’re cleaning the entire shoe afterwards. Our guide on how to clean Hey Dude shoes covers the outer canvas without messing up the fit. But for now, focus on the insoles: give them a thorough shake. Funny enough enough. And if you spot any stubborn clumps, pick them off with your fingers. Which indeed drives the core point.
Step 2: Prepare a Gentle Cleaning Solution
Consider this practical perspective. Fill a basin or bowl with lukewarm water, strictly under 86°F (30°C), and add just a few drops of mild liquid soap or Dawn, swishing until you see light suds.
Memory foam absorbs chemicals readily, so using heavy detergents. Or bleach will break down the adhesives that bond the top fabric to the foam.
And too much soap makes rinsing a nightmare. A tiny amount goes a long way. Actually, let’s put that more precisely.
Even a pea-sized dollop of Dawn for a bowl of water is plenty.
Step 3: Hand-Wash Using the Press-and-Release Technique
Dip your cloth or sponge into the soapy water. Wring it out so it’s damp—not dripping—and start cleaning. The way you touch the insole matters more than you think.
And sure enough, setting that to the side, instead of scrubbing back. And forth, press the cloth into the foam and release. Plus, repeat across the entire surface.
Scrubbing aggressively can peel the delicate fabric layer right off the foam base, which means and if you’ve already got some fabric peeling, you’ll make it ten times worse. Be gentle; let the soap do the work.
In practice, the dynamic changes slightly. If you’re also wiping down the shoe’s canvas upper — our hand-washing method for Hey Dudes uses a similar light touch to avoid water damage.
Step 4: Rinse and Remove Excess Water Without Wringing
Putting that aside for now, when you look closely, run clean, cool water over the insoles. Pressing them between your palms gently (which completely makes sense logically) to flush out soap. Each idea is to land rid of every trace of detergent. Leftover soap attracts dirt like a magnet.
Once the water runs clear. Lay the insoles flat on a dry towel. Roll the towel up loosely, and press lightly, no twisting, no wringing. Wringing compresses the foam and permanently changes its shape.
Step 5: Air Dry Completely—Patience Is Everything
Place the insoles in a well-ventilated spot. Away from direct sunlight and any heat source. Direct sun can degrade the foam, and a radiator. Or hot window sill will warp them rapid.
The underlying point remains simple. Drying takes anywhere from 24 to 48 hours. Yep, you read that right.
Which means if you put the insoles back before they’re bone-dry. Any trapped moisture breeds bacteria and the odor (a detail regularly overlooked) rebounds twice as strong. Feel every corner; if you sense even a hint of cool dampness, wait longer.
Step 6: Deodorize Deep-Set Odors with Baking Soda
From a practical standpoint, going back to what was covered earlier. Even after a thorough wash, some smells hang on. Because bacteria have colonized deep inside the foam. Baking soda is your best bet.
Once the insoles are 100% dry. Worth pausing on that one. Sprinkle a generous coating of baking soda (though exceptions exist, naturally) on both sides. That changes the picture quite a bit. In tons of cases, and the powder absorbs the oils and moisture that feed the stink. After that, shake off the excess; a soft brush helps get the powder out of the foam pores.
Nine times out of ten, the vinegar spray mentioned earlier works as a between-cleans fix. Just spritz, let air dry, and go. But for a real reset. The long baking soda soak (which completely makes sense logically) does the job.
Troubleshooting Common Mistakes
In practice, the flexible changes slightly. Under normal conditions. There’s a blazing rundown of ways (at least in loads of practical scenarios) this process can go sideways. Here’s what to watch for and how to fix it.
Why did my insoles shrink?
You exposed them to heat. Even warm water above 86°F can trigger shrinkage. But the dryer is the main offender. Once memory foam loses its elasticity, it won’t recover.
Toss them and start fresh, lesson learned.
The top fabric is peeling off. Can I save them?
Most likely you can use a tiny amount of fabric glue to tack it down while the insole is dry. But if delamination is widespread, the adhesive has broken down permanently, and honestly, aggressive scrubbing or soaking too long usually causes this.
They still smell after cleaning.
More recently, the odor bacteria are still alive deep in the foam. Repeat the baking soda treatment for a full 24 hours. Or try an overnight soak in a baking-soda-and-water paste (no liquid, just a thick paste dabbed on) before rinsing.
They’re taking forever to dry. Can I speed it up?
Not with heat. Point a fan at them to boost airflow. Some the majority place them near a dehumidifier. Whatever you do, resist the temptation of a hairdryer. Even on cool, the direct blast can distort the foam.
If you’re also struggling with Allbirds insoles that suffer similar moisture issues. Our guide to cleaning Allbirds shoes includes additional drying tricks.
What to Do Next
Now that your insoles are fresh, a few habits will keep them that way.
- Rotate two pairs of insoles — swapping gives each pair a full 24-hour drying reset after heavy wear.
- Spray with vinegar mix after each wear — kill bacteria before they settle in.
- Air out shoes immediately — don’t stuff sweaty Hey Dudes into a gym bag; moisture and darkness are bacteria’s best friends.
- Deep clean once a month — regular washing prevents the odor from becoming a chronic problem.
- Replace when foam goes flat — if the memory foam doesn’t rebound after pressing, it’s time for a new insole, no matter how clean it smells.
It all goes back to that earlier idea. By sticking to cold water, a light touch. Endless patience with drying, you’ll keep that just-broke-in bounce for months. And when the smell starts creeping back, you now know exactly what to do.
🔍 Research Sources
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