Earwigs make up the insect order Dermaptera and are found throughout the Americas, Africa, Eurasia, Australia and New Zealand. With about 2,000 species in 12 families, they are one of the smaller insect orders.
Phosphorescent paint is commonly called glow-in-the-dark paint. It is made from phosphors such as silver-activated zinc sulfide or doped strontium aluminate, and typically glows a pale green to greenish-blue color.
The light of a glow in the dark stick is generated by a chemical reaction known as 'chemiluminescence'. Most commonly, a hydrogen peroxide solution (activator) is mixed with a solution of phenyl oxalate ester (oxalate) and a fluorescent dye which helps to determine the color.