OSG-40 Silica Gel Dehumidifier Desiccant 40 Gram Orange NO Cobalt (II) Chloride (2-Pack)

This product appears to be doing what it's supposed to do. I placed one dehumidifier in each of my guitar cases. The humidity in both has dropped from ~64% to ~55% within three days (according to two different, un-calibrated digital hygrometers). The dehumidifiers are a good size for this application. They fit the headstock compartments of my cases perfectly. Double-sided tape seems to keep them in place, though something more robust might be needed if I traveled more. They add no noticeable weight to the cases. I have not tried re-charging them yet. Overall, I'm satisfied with this purchase.

These have a rather small amount of desiccant , but work well for a small volume. I use these in a small Pelican case and they last several months before the need for reactivation. The color indication is clear and they are reactivated in a few hours in the oven. To save energy and reduce cost I batch all the desiccant reactivations together.

Very simple, it does exactly as advertised. It is about the size of a smaller cell phone and no thicker than that. Being able to "Re-New" the beads is a great feature also.

Works as described. Renewable product. Great for helping to prevent mildew in airtight, secure storage boxes.

I needed to replace the desiccant in my personal safe. These work really well. They dehumidify very quickly, last a long time, and they're easy to reactivate.It's kinda hard to say anything special about these, since these are some old-school designs, but sometimes the simplest solutions are the best.

Works as expected, but I wish I bought one of the ones that you dry by plugging into an electrical outlet.

Seems to work as described. I keep one in enclosed container with prescription pills, and another in my beard trimmers case. The one in the beard case I had to "rejuvenate" per the instruction on the front. Worked well and they're back to their orange color (white beads mean to bake). Seems they must be working as intended.These are best in an enclosed container where the moisture will be centralized. Don't expect it to defog your car (not for long at least). This is a perfect product when used as designed.

Got some high-temp RTV silicone as well to seal the lid shut.Works well! Keeps my 3D printer filament dry. Just reordered for more, because I had more filament.