Is an innovative and more efficient way to dispense liquid scents. Unlike cotton and felt wicks, Stink Stick’s replaceable, fiberglass. wick allows more air flow to disburse scent. And, Stink Stick’s air tight, rugged container keeps your scent fresh. Tapered threads. Leak-free design; safe for your pack.Works in sub-freezing temperatures. Rugged. design for long lasting performance.