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...

I put two of them inside of a large safe where we keep backup hard drives and both of our laptops when we aren't here. The air conditioner broke and the house was 70% humidity inside, but the safe was 45%, which is about 10% lower humidity than the A/C typically keeps the house (we have all old and leaky windows and doors). I have two of the same hygrometer, both reading the same, so I'm confident they are accurate.I use a kitchen scale to weigh these when drying them out. I put them in the microwave on some folded up paper towels, because moisture comes out of the bottom when they are heated up. Plan to microwave them for more than the instructions, flipping them over and shaking them around a bit, in between microwaving. I'm able to get them down to the correct weight each time.

It's good. I've reused them multiple times now and they're still going strong. I like to use the convection oven to dry them out. I might try the airfry/microwave combo in our multioven though instead. They don't quite fit in the little slots in the AMS unit, but I just put them in the middle of the filament spools. Works great, and you can put a spool in the filament dryer with one in the middle too. recommended.

I use this for my car to manage moisture. I later on noticed moisture buildup on my windshield so I weighed them and saw they were at 650g (I used a kitchen scale to check). I was cautious regarding the bag melting (as I saw the reviews) so I did 4 rounds of 3 minutes microwaving in a 1000 watt microwave. I weighed them again and had them almost at 500g again, will be reusing them now. They work and should be reusable I just took a star off because for being reusable you'd think you'd need to be less careful with microwaving them

They actually work! I know, I know- it’s a weird concept but they really are an excellent product that fixes a problem I’ve complained about for far too long 😆

This is a reorder. It helps keep my filament dry.

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.