Make a scary shark Jack-O-Lantern with these Glow in the Dark Shark Teeth! They come in a set of 18 plastic teeth, six teeth in each of three different sizes. Each tooth has a barbed post on its flat end. To use the teeth, cut open your pumpkin and clean out the seeds and pulp from the inside. Then carve your face as desired, with a BIG mouth! Then insert the teeth wherever you wish by pushing the barbed post into the flesh of the pumpkin. Keep the teeth away from any open flame, or they could melt. We recommend using an electric light instead of a candle. To make the teeth glow in the dark, first expose them to strong light, then move the pumpkin to a dark area; the teeth will glow! Add this eerie effect to your decor!