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pennysave 16.5K Views
May 10, 2026 6:26 AM

6-oz Eva-Dry Wireless Mini Dehumidifier (White)

$11

$25

56% off
Amazon
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Deal Details
Amazon has 6-oz Eva-Dry Wireless Mini Dehumidifier (White, (E-333)) for $10.49. Shipping is free w/ Prime or on $35+ orders.

Thanks to Community Member pennysave for finding this deal.

Features:
  • Designed to absorb moisture from small enclosed areas (up to 50 cub. ft.)
  • Helps protect valuables from mold, mildew and moisture rot
  • Needs no power to operate - no batteries or power cord
  • Absorbs approximately 8 to 10 ounces of moisture in 3 to 8 weeks, depending on humidity levels
  • Suited for spaces up to 333 cubic feet
  • Renewable technology

Editor's Notes

Written by citan359 | Staff
  • About this deal:
    • Our research indicates that this offer is $9.50 lower (47% savings) than the next best available price from a reputable merchant with prices starting from $19.99
  • About this store:

Original Post

Written by pennysave
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Amazon has 6-oz Eva-Dry Wireless Mini Dehumidifier (White, (E-333)) for $10.49. Shipping is free w/ Prime or on $35+ orders.

Thanks to Community Member pennysave for finding this deal.

Features:
  • Designed to absorb moisture from small enclosed areas (up to 50 cub. ft.)
  • Helps protect valuables from mold, mildew and moisture rot
  • Needs no power to operate - no batteries or power cord
  • Absorbs approximately 8 to 10 ounces of moisture in 3 to 8 weeks, depending on humidity levels
  • Suited for spaces up to 333 cubic feet
  • Renewable technology

Editor's Notes

Written by citan359 | Staff
  • About this deal:
    • Our research indicates that this offer is $9.50 lower (47% savings) than the next best available price from a reputable merchant with prices starting from $19.99
  • About this store:

Original Post

Written by pennysave

Community Voting

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Top Comments

Community Reviews

Eva-Dry's wireless mini dehumidifier is best suited to small, enclosed spaces like safes, cabinets, sealed bins, and cars, where it can help keep documents, guns, ammo, filament, and glasses dry or prevent window fogging. The rechargeable bead design is praised for long-term use, with some units lasting years and needing only occasional recharging in gun cabinets. The main drawbacks are limited capacity, frequent recharging in wetter spaces, and indicator lights that can stop working or fail to show when the beads are dry. It is a compact moisture absorber that works best when the space is truly sealed.

  • Gun safe owners needing a low-maintenance moisture absorber, because it works well in small enclosed safes and only needs recharging a few times a year.

  • Car owners fighting window fog in a small enclosed space, because it keeps windows from fogging and can be recharged about monthly.

  • People storing documents or glasses in a sealed cabinet, because it helps prevent mold and musty odors in confined storage.

  • 3D printer filament storage setups in gasketed bins, because it keeps filament dry in a sealed container.

  • Drivers expecting it to dry a van or large room, because it does not reduce humidity enough outside a small enclosed space.

  • Anyone relying on the indicator window long term, because the beads can burn and stop changing color after repeated heating cycles.

  • People wanting a set-and-forget dehumidifier, because it needs periodic recharging and can require frequent attention in wetter conditions.

  • Buyers who need a durable unit, because some units failed completely and were discarded.

Common Questions (5)

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30 Comments

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May 10, 2026 8:57 AM
1.1K Comments
Joined Aug 2006
mythchiefMay 10, 2026 8:57 AM
1.1K Comments

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Thanks! I've had several of the larger E-500 model for years and they've been great.

A common complaint for this model is that the beads stop changing color after awhile.
Someone took it apart and noticed that the beads in the window, that show the color change, had become burnt which is why they stopped changing color. The beads within the unit were dry after recharging but you couldn't tell because the ones in the window lost their ability to change color. The unit had done it's job and dried out the beads after recharging but you couldn't tell. He just replaced the beads in the window with beads from within the body, which were dry, and then the unit indicated when the beads were dry again.

What likely happens is that the beads in the window get too hot from one long heating cycle. A possible fix is to dry the beads in stages, that is, plug the unit in for half the time then let the unit cool down for awhile, say an hour or so then plug it in for the rest of the heating cycle. Bothersome, yes, but not too much if a timer is used.
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May 10, 2026 9:24 AM
5.7K Comments
Joined Dec 2005
mrmochiMay 10, 2026 9:24 AM
5.7K Comments
This thing is such a piece of sh|t. I had 5 of these and they all went into the trash.
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May 10, 2026 10:38 AM
397 Comments
Joined Jun 2014
FastZX6RMay 10, 2026 10:38 AM
397 Comments

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These are great! I have one of these in each of my gun safes.
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May 10, 2026 9:18 PM
418 Comments
Joined Sep 2022
AquaVolcano980May 10, 2026 9:18 PM
418 Comments
Quote from mrmochi View quoted comment :
This thing is such a piece of sh|t. I had 5 of these and they all went into the trash.
Why did you get rid of them?
1
May 12, 2026 7:16 AM
7.9K Comments
Joined Apr 2009
ursusMay 12, 2026 7:16 AM
7.9K Comments
Quote from mrmochi View quoted comment :
This thing is such a piece of sh|t. I had 5 of these and they all went into the trash.
Oh damn. I wanted to use a smaller one for the kids room because I run two larger noisier ones in two spots during summer, but I wanted something smaller and quieter. What went wrong?
May 12, 2026 8:12 AM
404 Comments
Joined Dec 2012
nyantaMay 12, 2026 8:12 AM
404 Comments
I have 3 of these for safes and cabinets and they work great, ive recharged them multiple times over the years.
1
May 12, 2026 9:25 AM
468 Comments
Joined Apr 2013
steveindajeepMay 12, 2026 9:25 AM
468 Comments

Our community has rated this post as helpful. If you agree, why not thank

have two in my gun safes...which reminds me, gotta recharge them
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May 12, 2026 11:49 AM
5 Comments
Joined Dec 2014
firezakyMay 12, 2026 11:49 AM
5 Comments
Quote from steveindajeep View quoted comment :
have two in my gun safes...which reminds me, gotta recharge them
Same here
1
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May 12, 2026 1:43 PM
684 Comments
Joined Mar 2015
GinaG1983May 12, 2026 1:43 PM
684 Comments
I bought a few very similar to this from Aldi, which have a lifetime warranty. I have yet to have to use that though! I think I will pick up a few of these to see if they're comparable.
1
May 12, 2026 8:03 PM
798 Comments
Joined Jan 2007
EsenteMay 12, 2026 8:03 PM
798 Comments
Bought one for my van in Houston humidity. Does not reduce humidity at all.
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May 13, 2026 5:42 PM
5.7K Comments
Joined Dec 2005
mrmochiMay 13, 2026 5:42 PM
5.7K Comments
Quote from ursus View quoted comment :
Oh damn. I wanted to use a smaller one for the kids room because I run two larger noisier ones in two spots during summer, but I wanted something smaller and quieter. What went wrong?
it doesn't work for its intended purpose, even if you put it in a tiny cabinet. Need to recharge frequently. Indicator stops working after ~ year or two.
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May 13, 2026 11:37 PM
11K Comments
Joined Mar 2018
WooHoo2You
Pro
May 13, 2026 11:37 PM
11K Comments
Quote from mrmochi View quoted comment :
it doesn't work for its intended purpose, even if you put it in a tiny cabinet. Need to recharge frequently. Indicator stops working after ~ year or two.
Sounds like you have a humidity problem. You can't expect one of these to drop the RH of your entire house and even a closed cabinet breathes. Not to mention if the cabinet is wood or similar, then it too will absurd, hold, and release humidity from the surrounding area...even with the tiny cabinet's door closed. Even if the cabinet is not a material that can absorb humidity (metal, plastic, etc), if the cabinet isn't sealed, at least somewhat, then the size of the cabinet hardly matters.

Let me guess, your windows 'sweat' in winter....

FWIW, I have several of these, they are awesome in my gun metal cabinets (not even sealed "safes") and I also keep one in each car's truck. The ones in the cars need recharging once a month but the ones in the gun cabinets only need recharging once or twice a year. The indicator stops working if they get way too 'wet' and stay that way...like far more 'wet' than normal use. Again, suggesting you are not addressing the actual humidity problem, just trying to throw a band aid on it.

P.S. These are this price often at LIDL.
Last edited by WooHoo2You May 13, 2026 at 05:41 PM.
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May 16, 2026 5:51 PM
478 Comments
Joined Dec 2007
wcsMay 16, 2026 5:51 PM
478 Comments
This will not work in a room or even closet. I would only use these to throw in a safe or sealed storage bin of some kind. This will probably remove as much water as a true dehumidifier running for 3 minutes before it needs to be recharged (and correct me if im wrong but recharging it just heats up the beads so they dry out which simply releases the moisture back into the air).
Last edited by wcs May 16, 2026 at 11:54 AM.
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May 16, 2026 6:05 PM
26 Comments
Joined Dec 2009
hylo23May 16, 2026 6:05 PM
26 Comments
I leave one of these in my car and the windows never fog up.
I keep one in a zip lock and toss my phone in there when its raining.

It will not suck up moisture in a large room. It will but it does not have the capacity for large amounts of moisture without a recharge. Small enclosed spaces work best.
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May 16, 2026 6:06 PM
174 Comments
Joined Aug 2011
kurizmaMay 16, 2026 6:06 PM
174 Comments

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so this is just silica beads with a build in dryer? you can get a jug of color changing silica beads for about 5 bucks a lb (get the green, blue is toxic) and dry them out in the oven when they change color. https://www.amazon.com/dp/B0CFDZ79YN?th=1
I use them in the safe, and keeping filament, and guns and ammo dry.
4

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