Nice, sturdy little product, the best I've seen for controlling humidity in a confined storage space.

I haven't used these long enough to have to renew them. Every other reviiew really liked them. I'm using them for ammo storage. This is the best price I found for the exact same product, even better than Midway. Buy enough and the shipping is free too.

I had one of these items for many years but somehow lost it. I searched everywhere to buy one and then gave the Internet a try. I found this site and quickly made the purchase. It was a great price and fast delivery. I encourage people to buy this product as it works. I set reminders on my smartphone so that I can check the device every 90 days and then pop it into the oven and then back into the safe for another 90 days. It works and protects the contents of your safe!!!!

These work great and recharge just as advertised

Just what I needed. Quick delivery, too.