Every sailing vacation presents with the question of what bug spray I take with me? This time, I came across this product and am really pleasantly surprised. It does not stick so terrible on the skin (clearly one has to wait a couple of minutes), does not irritate as extreme as the other products, the mucous membranes (one should not still use in confined spaces) and holds actually min. 8 hours. Evening sprayed morning I could crawl without mosquito bites out of my bunk ... and that's never happened to me :-)) We recommend!