I can sell you a rock that will keep tigers away, for only $250 shipped. I'm carrying one right now, and I've never been attacked by a tiger.
Do you have other substantiation for its tiger repellance? In which tiger-dominated environments has it been tested?
When people talk about self-defense, they tend to concentrate on how to physically defend yourself. But the best way to avoid getting hurt is to avoid being attacked in the first place. Here are some suggestions:
What are some other easy measures that people can take to make themselves less of a likely target?