Managing Moisture

by
posted on November 18, 2014
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
gsagi2015_fs.jpg

My daughter is in a wheelchair and self-regulation of her body temperature is a challenge, so her overnight outing required some special precautions, including a small, heater-equipped trailer. Conditions were far from optimal with the mercury dropping to below freezing at night, but it served up a stark reminder that moisture management applies to more than just your gun safe.

The lesson is common sense. The trailer is small, and the first night my wife and I, along with Sniper-our 150-pound, year-old, black Great Dane-saw temperatures drop to around 28. Inside the little camper/trailer, it was comfortable, but condensation from our breath and cooking collected on the windows and dripped inside. Moisture also collected on my 1911 when I entered after being outside. Cold metal tends to do that when subjected to warm and humid environs.

The unit's indicating desiccant shows blue when it's not saturated and turns pink when it's time to recharge. The Eva-Dry plugs right into any wall socket when it needs recharging. Expect it to last 10 years and expect each recycling to require 15 hours.

I wasn't worried about my well-oiled gun as much as I was about our daughter's warmth. If her bed next to the window got wet, it could quickly become dangerous, so I broke out a product called Eva-Dry 500. It's wireless, has an indicating desiccant that turns pink when saturated, and is recharged by simply plugging into a wall outlet for 15 hours or so. I monitored my handgun's slide afterward, and the problem reduced noticeably, but not completely. Bedding didn't get wet the next night when our daughter arrived, either.

I've spoken to one of the co-owners. He travels extensively and uses the company's E-150 Moisture Eliminator Pouches in his carry-gun case to battle this kind of condensation and its potential for rust. The disposable packets are effective for 150 square feet and when the orange indicator turns green, simply toss in the trash.

I put the Eva-Dry 500 through testing identical to that which I subjected both the Liberty Safe Mini-Canister and Drierite. The Eva-Dry products' silica gel is slower working than the others. Relative humidity drops significantly and reliably, even after multiple recharges, but instead of it taking 72 hours to come to equilibrium in the airtight canister, it takes two weeks.

In the trailer for two nights, the slower action was somewhat of a disadvantage, however, in a rarely opened gun safe or a case protecting a wood-stocked hunting rifle in a cold-weather destination, that slower, methodical action is probably a desirable trait.

Let me know what you think.

Latest

Gotw Savage Arms 110 Core Tactical 1
Gotw Savage Arms 110 Core Tactical 1

Gun of the Week: Savage Arms 110 Core Tactical

Recently, Savage Arms has embarked on an ambitious project to update and modernize its extensive line of bolt-action rifles, and one of the latest enhanced models available is the company's 110 Core Tactical bolt-action.

Political Report | NRA Responds to ATF’s Regulatory Overhaul

Administrative rules are not the most glamorous aspect of national governance. But they are fundamental to bureaucracy’s inner workings and how they affect, for better or for worse, the daily lives of ordinary Americans.

The Armed Citizen® Sept. 25, 2026

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

U.S. Troops Using Captured Small Arms in World War II

American troops took a healthy interest in Axis small arms during World War II. Sometimes they were simply looking to collect a war trophy. On other occasions, GIs and Marines looked to use those firearms against their former owners.

Standing Guard | The Midterms and Freedom

Politics is something most of us only step into because we must. We’d rather smile in the warm autumn sun as we help a son or daughter, or grandson or granddaughter, break their first clay or plink steel with their first .22 rifle.

America’s Retaliation for the Lives Taken by Iraqi Sniper “Juba”

The killing of the Iraqi insurgent sniper known as "Juba" was a collective effort by thousands of Marines, culminating in one single shot.

Interests



Get the best of American Rifleman delivered to your inbox.