I called in during the school holidays and talked to a lovely lady there about my son who was getting badly bitten by sand flies and Mosquitos. She was very helpful and suggested an insect repellent or the bracelets that he could wear. She was very honest about not being sure how effective the bracelets would be but would be interested to know if they work. I bought both the spray and the bands. Would now like to advise that the spray is great. It lasts pretty much all day, as advised. However the bands aren't quite as good. They protect the arm or the leg that they are on, and that is all, for my son anyway. My daughter found them great. But she does not appear to be as attractive to biting insects as my son. Thanks for your advice. Great pharmacy. Just thought I would report on the bands as requested.