Spend your money on them if you like. For me, I have not needed them in the past, and do not need to spend the money on them in the future. They are not "magic wands" that make you invisible. I keep to the basics......good hygene with anti bacterial soap,wash clothes in baking soda and air dry and above all......Keep the wind in my face! I get a nice buck and several does every year this way. I am sure you will get several opinions on this. We have debated this topic several times in the past. To each his own.....if they give you confidence and you have the money, then by all means buy one. I for one am not falling for the marketing on this one.