FWIW, I got back a few days ago from two weeks on Cozumel. We dove nearly every day, and in all that time in the water I had one mild twinge on my upper lip.Thank God my wife and I have never been diving Coz during this time of year for this larvae invasion. There's enough things that manage to sting us somehow and last thing I need we need is to experience an invasion of these things no matter how short lived it is. Then again, the producers of Andantol need to stay in business too. The anti-itch cream producers and the stinging sea life seem to have their own symbiotic relationship.