PREPARING BTI BOMBS – Members of the Inner Wheel Club of Dagupan led by Michelle Lioanag (center) demonstrate to residents of Barangay Malued in Dagupan City, how to make a coconut bomb with Bacillus thuringiensis israelensis (BTI). Coconut bombs are known to be lethal to mosquito species. (Punchphoto by Jojo Riñoza)