Almost everyone who buys from us receives all the proof that they need. The extremely small group who do not receive the benefits that they expect can return their items for a full refund withing 30 days of receipt.
All that we have ever asked is that if someone has a need, try it. If it does not do what is expected, return it.
Nobody "HAS to believe" in zappers.
Our biggest seller is word of mouth by our customers.