wisedry 4 x 500 Grams [4.4 lbs] Rechargeable Silica Gel Car Dehumidifier, Microwave Fast Reactivated Desiccant Packets Large for Gun Safe Closet Basement Garage Storage Moisture Absorber Bag Reusable

A month ago I never would've guessed the answer to my cars' inside window fogging problems could be as simple as a giant version of the same thing I've seen inside supplement bottles for my entire lifetime. Now I am a believer, and that's thanks to these WiseDry 500g desiccant packs!They worked for me exactly as advertised, including the recharge procedures. I purchased 8 packs and stuck 4 inside each of my problem children (vehicles, that is). The benefits played out over several days. I did need to wet vac out the pooled water in one of them to get maximum benefits from the packs. But the result over 4 weeks of constant usage is obvious--highly reduced condensation on the inside back and front windows of the two cars! In a wild, woolly, WET Pacific NW winter, that is an AMAZING result!I did discover the microwave is not a very efficient way to recharge all 8 even 2 at a time. It took these packs about 5 days to suck up enough moisture to go "full bloated" (650g weight or more) and following the instructions it would've taken a couple hours all told to get all back down to 505g +/- new weight. And that process pretty much required constant attention. I was actually concerned about the workout it gave my microwave, which isn't used to more than 20 or so minutes of use at a time. So I tried the oven method and was more satisfied using that for these packs. Keeping the oven temp below 300F it still took 6 1/2 hours to get all 8 packs down to recharged weight, but it was a completely hands off process. I don't have an easy way of measuring the energy use of my oven, but I wouldn't be surprised if cost was a wash due to the lower KW needed by a 240V appliance to provide same amount of heat as a 120V unit. That's physics so not gonna go there. Anyway, these packs fared well in the oven so that's likely how I'll generally recharge them. All told I'm giving them 5 stars and gonna keep them in mind for ALL my moisture-related problems henceforth.One note about oven recharging: I'm cheap so I order some less expensive versions of these 500g desiccant packs after seeing the results of the WD's--the white ones that look almost exactly like an overblown version of a vitamin pack, in every way, including seam sealing. Whereas the WD's are tubular construction with just very serious heat fused seams on the top and bottom, the cheaper packs have seams on all sides that did look less, shall I say, "sincere." I allowed them that slack since they were, in fact, cheaper and still claimed to be oven-chargeable. sWell don't you believe it!! Of the 6 of those packs I oven-recharged same as the WD's, 4 split their seams and spilled the beads! Would've been a much bigger mess had I not had a baking sheet below them to prevent direct heat from the oven elements. Oven temps were never about 300F but I believe should be kept to a limit of 250F for these packs. Then they seemed fine, but time of recharge would go up as much as several hours. I have yet to try that again--getting my courage back up...

These work well for drying 3D printing filament. If you use a Bambu Labs AMS then these can go down the middle of two spools. These also can be dried and reused following the instructions included. The color change tech is very useful as well. These are a little large for some applications, but they sell smaller ones too.

Purchased these for my car as each morning, my windshield was fogged up on the inside. Didn’t expect much, but after placing these both on the dash, I haven’t had the issue since. I’m guessing they “re-charge” themselves as they sit in the sun during the day, because they keep working day after day. The size is good and I think the quality is high, as they work well so far.

The media could not be loaded. Early days but impressed so far.Using these in my safe for 4 days and they’ve already drastically reduced the moisture in the air.Will update if I have an issues going forward

good product

I've been using these for 3 years and can attest they work exactly as described, recharge just like brand new in the microwave, and I would absolutely buy again.

Works very well, brings the humidity down quickly. IMO, this product that just has you weigh it to know when to dry is better than color changing, because the color change doesn't really tell you when it is saturated, just when the RH around it has increased. By then the product has been ineffective for awhile. It is better to just weigh it occasionally and estimate how long it should last that way. As well, the window to see the gel is normally not as heat resistant and it more likely to be damaged upon renewing.I also had a slight issue which the company was quick to resolve for me! Great service!

I recently decided to tackle the humidity gremlins lurking in my storage boxes, and these silica gel packs came to the rescue. Their compact size made them easy to tuck into various nooks and crannies, keeping my items safe from moisture.​I even tossed a few into my snack stash, and now my chips stay as crisp as my witty remarks. However, recharging them requires some patience and a microwave dance routine.​Overall, these packs are a handy solution for keeping things dry, just be prepared for a bit of maintenance.​