I tried the search. No luck. ???

I have two kinds of strike-anywhere kitchen matches: Ohio Blue tip and Diamond.

The Ohio's are not acting strike-anywhere. They will not light when I strike them on our concrete sidewalk. I used them on different coarseness of surfaces. But, they will light when I strike them against the box.

The Diamonds, on the other hand, will light when struck against the sidewalk and, of course, against it's own box.

Is there something wrong with my Ohio's? I don't know how old they are. Do they have a shelf life? The box reads damp proof and they have never been wet.

I am also extremely disappointed that both matches will not light against either side of an emory (spelling?) board. The emory board simply sands the top of the match away, without lighting it. Are there different coarseness of emory board? I'll be in the White Mts of Arizona in two weeks and it is disturbing that I might have been in a situation to rely on my Ohio's and emory board.

How am I supposed to light these matches when everything is wet?

Thank you very much.