Dry-Packs Absorbent Industries 15PK Silica Gel in Tyvek Dehumidifier Absorbs Moisture 28 Gram, White, (28GR.TYVEK-15PK-ALT1)

The packs are more like 3½ x 4½ but you are getting the correct amount of desiccant. Packets are approximately 7/16 thick. They absorb moisture well. Lost one star for incorrect picture.-Update-Be very careful if you recharge these. I baked these packets at 230 deg for 2 hrs as recommended elsewhere and these packets melted in the last few minutes. I am now trying loose silica in muslin tea bags.

One packet per ammo can. The arsenal and ammo stash is slowly growing, so I had to order another 15-pack. These are great sizes for both ammo boxes and 5-gallon pails that store emergency food for my household. My first set of 15 packs also survived their first "annual" recharging successfully. I live in a relative low-humidity area (NorCal), but tried recharging them via baking just to see how they would handle it. So, I baked them in the oven at 250F for 6-9 hours - no melting or smelly outcome...worked like a charm. They're all back in their respective ammo can keeping moisture at bay! Great product!

It's hard to "Love it" with something as mundane as dessicant. If you need it, these work great. Be sure to size appropriately for your application and then order the next size larger...

I used these to aid moisture control in ammo boxes. I was unsure of the size until I received them, but they are just what I wanted. I am using plastic containers to store 200 rounds of .223 in metal ammo cans. These packets should be the final touch to insure long term storage of any ammo in sealed containers.

item rec'd sooner than expected and put to immediate use. I have and would definitely recommend this product again, great for absorbing moister from automotive head lamps.

Have just started to use. Am assuming they will be of assistance.

Package is heavy material.I use them in my ammo cans.

These packets are working well for helping preserve my home dried backpacking foods, 2-6 pounds of veggies fit in a 1 quart ziplock freezer bag, then I add one of these packets to make sure everything stays really dry, works great.

These packets are not 4" long as indicated by the photograph and tape measure.They are actually only between 3 1/4" and 3 1/2"Although I assume they are filled by weight, I did expect something physically bigger.

As adverticed