When thrown they emit a dim green or red light, depending the glow stick type, providing illumination around the area it lands in. They are used in very dark rooms with many enemies, where a flashlight is deemed quite risky to turn on. The main benefit is that they never alert Sleepers.
They last for a minute before disappearing. Red glowsticks are more uncommon than the green counterparts, but other than coloration, there is no difference in their functionality.
Glow sticks are always in bundles of twelve. Be mindful when the last glow stick is thrown, as you may automatically switch to a firearm and accidentally open fire.
Glow sticks are used to provide light source that is undetecable for Sleepers.
In pitch black rooms, with many Sleepers around the team. The glow stick can be helpful for illuminating the room as flashlights risk awakening Sleepers.