what size is this 500g pack?

It's approximately 13cm wide and 19cm long with a depth of about 2cm.

Will this be good for 4 months in a duffle bag in the storage room?

Can't see why not though I suspect it depends on the bag not being 'wet'. It only absorbs damp and needs to be dried from time to time

Can these be used in a refrigerator to reduce condensation?

They would certainly work, but a better solution would be to find the source of the moisture - usually uncovered food or drink. If the soure isn't covered up/seealed, then all that will happen is that the dehumidifier bags would extarct more water = dried out food which is probably not what you want.

How do you know when it needs to be recharged?

A 500g silica gel packet can absorb moisture about 175g,so when the weight around 675g,you can recharged it as instruction.Actually checking its weight is more accurate than the way with colored humidity indicator.

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wisedry Silica Gel Packets Car Dehumidifier Bag Reusable, 1kg [2 x 500 Gram] Microwave Fast Reactivated Desiccant Sachets Eliminates Foggy Damp Windscreen, Moisture Absorber for Car, Caravan, Van

wisedry Silica Gel Packets Car Dehumidifier Bag Reusable, 1kg [2 x 500 Gram] Microwave Fast Reactivated Desiccant Sachets Eliminates Foggy Damp Windscreen, Moisture Absorber for Car, Caravan, Van

Product ID: 61841030

Details

Brand
wisedry
Capacity
1 kg
Colour
Black
Floor area
88 Square
Included components
silica gel
Item weight
1 Kilograms

⚡Microwave reactivation in 16 mins

💧Absorbs up to 300g moisture

♻️Reusable & eco-friendly

304.47 DT

Duties & taxes included

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💨 Banish Dampness, Drive Fresh — Stay Ahead of the Fog!

POWERFUL MOISTURE MAGNET - Each 500g pack absorbs at least 150g of moisture, protecting your car and belongings from damp damage.
RAPID RECHARGE READY TO GO - Microwave reactivation in just 2 x 8-minute cycles keeps your dehumidifier fresh and effective.
SAFE CLEAN CHEMICAL FREE - Non-toxic silica gel beads with no leaks or spills—safe for your vehicle and family environment.
FOG FREE MORNINGS EVERY MORNING - Eliminates condensation & mist on windscreens for safer, stress-free drives.
VERSATILE PROTECTION BEYOND CARS - Ideal for caravans, garages, closets, electronics, and more—keep all your spaces dry and mold-free.

The wisedry Silica Gel Packets Car Dehumidifier Bag is a powerful, reusable moisture absorber designed to eliminate foggy windscreens and protect your vehicle interior from damp and mold. Each 500g pack absorbs at least 150g of moisture and can be quickly reactivated in a microwave, making it an eco-friendly and cost-effective solution. Perfect for cars, caravans, and multiple storage uses, it offers safe, chemical-free protection to keep your spaces fresh and dry all year round.

Specifications

ASIN	B0781BR7V7
Best Sellers Rank	526 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 6 in Lab Evaporation & Drying Equipment 6 in Desiccants
Brand	wisedry
Brand Name	wisedry
Capacity	1 kg
Colour	Black
Country of Origin	China
Customer Reviews	4.5 out of 5 stars 15,565 Reviews
Dehumidification Capacity	0.02 Pints per Day
Floor Area	88 Square Inches
Floor area	88 Square Inches
Included Components	silica gel packets 500g*2
Item Dimensions D x W x H	25.6D x 22.3W x 7H centimetres
Item Weight	1 Kilograms
Manufacturer	wisedry
Material	Silica Gel
Model Name	500g x 2
Model Number	WD-1
Operation Mode	automatic
Other Special Features of the Product	Automatic Moisture Removal, Portable
Part Number	1
Recommended Uses For Product	Residential
Smart Home Compatibility	Not Smart Home Compatible
Special feature	Automatic Moisture Removal , Portable
Tank Volume	300 Millilitres
Tank volume	300 Millilitres
UPC	717332194054
Unit Count	1000.0 gram
Wattage	700 watts

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