OH For F**k's sake its only Tanzania for a little holiday...you aren't going up the Congo...
its touristy Tanzania

Darn... just spray yourself in this bush mixture make it in a plant spray bottle:

1 tsp citronella oil
1 tsp dettol
top up with water...

wash / impregnate your clothes in citronella
dont wear dark colours
be extra vigilant around dawn and dusk