RC, make sure SPECIFICALLY that it is COTTON dryer lint. ALL cotton, no synthetics in it at all. Most synthetic fabrics are acrylic or polyester, which are plastic threads -- they don't really burn, they just melt.

And don't let the lint sit around sucking moisture out of the air. As soon as the dryer cycle finishes, yank it out and put it in a sturdy freezer bag or something to keep it dry.

Sue