Cigars 101

How to remove mold from your humidor

First, let’s take a look at what causes mold. Mold is more often found on your cigars than in your humidor, and mold is most likely to appear when the RH in your humidor exceeds 75%. The longer you allow the RH to remain that high, the more likely you will find a fuzzy substance on your precious primos that manifests itself in white, grey, green, blue, or even dark brown. Add an equally high temperature and you’re just begging for trouble.

According to one source, cigar mold can even come from handling your cigars with dirty hands, so it’s best to wash your hands before you rotate your cigars or place new cigars in your humidor.

Most of the time, your cigars can be salvaged, especially if you catch the mold early. In my case, the cigars were OK and the humidifier didn’t appear to have any mold on it, so here’s the proper way to remove mold from your humidor

This process will probably add a little extra humidity to your humidor, which may have caused the problem in the first place. Therefore, don’t close the box just yet, and make sure the walls are dry before putting your cigars back in.

I think I know how my problem may have occurred. When I had last recharged my humidifier I noticed it was really saturated, but it wasn’t leaking. However, it might have been just a matter of time before enough water collected via gravity to spill over the edge of the block and work its way underneath.

If it wasn’t mold that I was dealing with, it could have also been mineral trace elements. Also called “water scale,” this chalk-like substance comes from using hard water in lieu of distilled water. For this reason alone, never use tap water, filtered bottle water, or even boiled water, because mineral deposits will continue to build as the humidity in your humidor evaporates. However, unlike mold, which tends to spread quickly, water scale does not.

I never use anything but distilled water in my humidifiers, so I’m still leaning toward mold, but the evidence also pointed to water scale since it was limited only to that one spot in the box and the cigars were spared.

Either way, neither substance is good for your humidor or cigars, so inspect your humidor often, and clean it on a regular basis, too. Just a simple wiping down with distilled water is usually all you need to keep your cigars’ environment clean and your cigars happy.