Just because something doesn't light with a match doesn't mean it is not a great fire starter / accelerant. You can put out a cigarette in Gasoline. Try dumping some diesel on the ground and lighting it, try it with kerosene, or wax . . . It won't light but it certainly does "burn" under the right circumstances.

Now like "Brangdon" said, some of these need a wick. Just to prove this true, take a cotton ball and light it. Time how long it takes to burn. Now saturate it with PJ and burn it. It will burn WAY longer.

Cotton Balls will also light after they've been wet but much depends on how they've be saturated and then after they've been wet they need to be torn and then fluffed.

I like the experiments, it's lots of fun and you learn a lot.