Reddit reviews EXMAX Blue Indicating Silica Gel Beads(2-4mm) Desiccant Functional Hard Plastic Canister Dehumidifier Moisture Absorb Box Dryer for Camera Microscopes Telescopes - 2 Pack
We found 4 Reddit comments about EXMAX Blue Indicating Silica Gel Beads(2-4mm) Desiccant Functional Hard Plastic Canister Dehumidifier Moisture Absorb Box Dryer for Camera Microscopes Telescopes - 2 Pack. Here are the top ones, ranked by their Reddit score.
Premium Quality: Blue silica gel desiccant is compact, rugged, easy to carry and store.Premium Quality Silica Gel Desiccant Beads.Net weight for each pack is about 45g=1.59oz,Beads size 2-4mm.Indicating: Beads will turn from Blue(Active) to Red(Saturated) after absorbing 50-60% moisture.Half more capacity left to absorb moisture even after color change.Safe: Tight Sealing for Long Term Protection & Preservation.Pack Dimension : 0.98*2.16*2.16in/25*55*55mm " , Silica Gel Beads Size : about 2 ~ 4 mm. Pack Weight:45g=1.59oz.Silica gel is non-friable and won't disintegrate，Packets are Stored in Resealable High Quality Self-Standing Plastic Case for easy storage and use.When Blue beads turn to Red， you can reactivate easily in oven or microwave.Beads can be Reactivated in the Oven for half to two hours at 200-250F Or Microwave for About 3-5 Minutes at DEFROST.Useful:The Indicating Silica Gel Beads(2-4mm) Desiccant are great for camping gear, fishing gear, cameras and photographic accessories, lens storage,Tool boxes, safes, gun cabinets, laptop bags, closets, storage bins, shoes, boats ,Guns, Ammo, Canister, Collectible, Jewelry, Passport, Cosmetics, Books, Documents, Travel Bags, Gym Bags, Make Up Boxes, Silverware, Christmas Decorations, & Valuables, households etc.
I haven't had issues with my laptop and humidity because it's in fairly constant use. Our last house had a dry box that I kept my camera in, but barring that, I highly recommend a dry sack with a reusable silica pack.
Dessicant (aka silica gel beads) have can only absorb so much moisture before they need to be recharged. Keep them away from children as ingesting them could be bad.
https://www.thoughtco.com/are-silica-gel-beads-poisonous-608408
I haven't tried these, but they might be useful.
https://www.amazon.com/ATD-Tools-7886-Replacement-Desiccant/dp/B000OUXA2Q/ref=pd_sim_201_1?_encoding=UTF8&pd_rd_i=B000OUXA2Q&pd_rd_r=V446JJ6FX2SNWPKM9R3F&pd_rd_w=dhWyv&pd_rd_wg=VSJkC&psc=1&refRID=V446JJ6FX2SNWPKM9R3F&dpID=41tG3lgYUdL&preST=_SY300_QL70_&dpSrc=detail
https://www.amazon.com/EXMAX-Indicating-Rechargeable-Functional-Microscopes/dp/B00YS3AEYC
I appreciate your ingenuity, but I don't like your solution. There must always be some way to get the windshield glass warm enough to cause the fogging on it to evaporate (assuming the car's heater is working and has a minute to warm up), and I'd rather throw some electrical power at the heater than have to swap kitty litter every so often.
That said, do whatever works for you. If you just want a desiccant, there are types of desiccant that color-change when saturated and can be baked dry again.
It depends; if your cameras are primarily stored in a climate controlled space (like, your home with central HVAC), you may not need to worry at all. If you live in the tropics or on an island (look how many lenses from Japan on eBay have fungus) and your gear is stored in warm and humid conditions, the camera bag won't help - it's too open to the air.
The best prevention would be to get some sort of plastic storage box, like the kind for storing sweaters and winter clothes, with a reasonably air tight lid. Buy a set of reusable desiccant - when it changes color, you bake it in the oven - many sets include the desiccant beads and containers to let them absorb moisture. Keep your gear with optics stored there when not in use.