It's true sometimes it is indeed funny to use their superstition to your own benefit, I had some hectares of land with a HUGE bamboo grove, the locals keep cutting bamboo there for ceremonies etc etc even after I asked them to do so. I tried different things they kept taking the bamboo. Then I told the klian I saw that big snake goes inside and a hantu appeared....after that for 5 years nobody ever cut one piece of bamboo again