How to use PropFinder: When your gadget is ready the green LED would be blink, press LMB to activate PropFinder to start search props(don't change weapon when you use PropFinder), in a one(three in 0.0.4.2 update) second PropFinder will report on search results: if green LED is glowing, this means that PropFinder find one or more props in your area, and all finded props started playing taunt; if red LED is glowing, this means that PropFinder doesn't find any props in your area