Yes, but which aliens. *stroking beard* Some are actually hives of specialized spores, similiar in concept to a portugeuse man of war or coral, held together by static charge- bullets won't bother them, but an air compressor and a good bottle will ruin their day, or a leaf blower or large fan. So will dryer sheets, if you have to go hand to hand.

But who would be that prepared? Firearms, flamethrower, crossbow, swords and axes, oaken stakes, paintballs filled with everything from holy water to olive oil to bread mold, those are all common items in the survival arsenal. But no one includes dryer sheets.

*grins*