My dad takes chlorophyll pills during spring/summer and the mosquitoes dont touch him. (my mom and I dont usually get bitten naturally) If he doesn't take the pills he gets eaten alive.
I'm not sure what natural stuff would have it in, but i think parsley has high amounts??
I haven't tried it but theres this stuff [Crocodile for Pets & People lotion] which is supposed to be really good, even for Black Flies
