So does it work as well as a traditional check cord? I think so. Does it work any better than a traditional check cord? Probably not. But here's why I find myself grabbing it, and why I think it's worth the $30 price tag: the Whoa Dog absolutely will not pick up sandburs, spines, thorns or other plant-based implements of torture. If you've never had your hand perforated by a burr-studded nylon check cord attached to a running dog, then in the words of Yoda, "pain you know not."