I notice the tube version of the scenter is gone... They are now in pouches. Wonder if this is a one-time shot or if the pouches can be refilled? Anyone know?

As far as running a scent trail off the wires... use it attach a perforated snubber to the ball or made into part of the release and inject it with a liquid scent. Worked great! Problem was... it got expensive. So I abandoned that method. Another trick is to drill a very small hole or poke a hot needle in the underside of a plug and place some liquid scent in there.