Hopefully this will help everyone... without costing too much! Just returned from an island off Malaysia where Sandflies are rife (i ended up with a secondary infection from one which blistered and got infected, and 3 weeks later they are still purple and itching like mad!!). The small resort we stayed in made their own homemade concoction and the sandflies hated it - they'll fly close to you, but won't land and bite! Not too sure about the proprtions but simply teatree oil, baby oil and detol. Doesn't smell great but works. Citronella and mozzie sprays don't work at all... or they didn't with me. C