Customer Reviews
I'm unhappy 
2008-10-06
I can't say if the product works or not because I haven't been able to use it. It didn't come with any instructions and I've called the company twice. I spoke to a very nice woman who promised to call the manufacturer and get all the info to me along with written instructions on how to use the product. They haven't called back and I plan to call again this morning. (Adorama Silica Gel with refills)
Dehumidifier 
2008-05-22
Very good alternative to the little packets I usually use in my camera cases. Seems to do the job and I can "bake it" and use it again and again.
Lasts forever. 
2008-01-18
These things are designed for removing moisture in bags/cases/boxes, etc. You can use them in your acid free photo boxes, your gun or guitar cases, camera or telescope bags, etc.
When the indicator turns pink, pop it in the oven at 250 degrees for a couple of hours until the indicator is blue again and it's ready for reuse.
With proper care these things will last darn near a lifetime. Just make sure you do not accidentally spill anything on the beads or the "pores" will clog and they will no longer function. (Moisture in the air is free from minerals that can clog the beads)
My husband has had one for his small ammo box for around 10 years now and it still functions like a champ.
Instructions were on case in older model 
2007-03-07
I bought one of these items in December '04 from Adorama. It had directions written in raised letters on the canister itself. I just ordered here and received a second one in March '07 and the "new" model has no instructions. Other than that, it looks identical to the old one, so I assume the contents are the same.
Here are the exact words written on the old one:
"HYDROSORBENT 40 GRAM SILICA GEL"
"WHEN PINK, REACTIVATE 3 HOURS AT 300F"
The pink referred to is the little circle in the center of the canister.
I keep this product with my camera (in closed stuff sack) and it seems to work as advertised - though I guess you just have to have faith that it does - no easy way to prove it (except maybe in extremely humid climes).
How does it work? 
2007-01-04
The Adorama Silica Gel came without any instructions on how to use and reuse it. I emailed customer service at Adorama to ask how to use it and how to recharge it once it has absorbed enough moisture but they did not respond. I can't tell when it needs recharging and when it is ready. What color should it be and what color should indicate recharging. How to I recharge it? Nothing tells me how to recharge it. So far, money wasted. Unresponsive to my emails.