There seem to be very few mosquitoes, that I have seen, right now. Yes, they are around but haven't really bothered me. As for sand fleas, I always spray my legs before going out to the beach at night or after it rains. If I am at a beach bar I also spray my arms because there is sand on the tables even if you don't see it. The other thing I do is to shower when I get back so there is no sand on me at all. I once had sand fleas in my bed - it has never happened again.