sand fleas really love me,i used to get hundreds of sand flea bites on my legs.i tried DOG flea collers fastened loosly on each ankle so they can slide up and down your legs.i put them on when I get there and take them off when I leave for the airport.you even wear them in the water swimming.in the 15 years that ive been using them I went from hundreds of bites to zero in the 3 weeks time I spend there.putting them on loosely prevents you from getting a rash because the water washes off any residue from the flea collers.