Have several boxes of matches. Went to use them—they are grossly inferior to those 50 years ago. Couldn’t get a one of them to light striking on the rough side of the box. Incredible.
Save those silica packets that are in everything we get today. Throw them in the match boxes. Voila, long life.
Also....tear off the “strike strip” from a match box and put it in with the matches. The cardboard on the back of the strip can absorb humidity over time.