(A) Collection of soil sample from field of village Sarai Naurang, KPK. (B) Soil trap method in pots using wax moth larvae shown by circle line (C) 5 G. mellonella larva in sterilized 10ml beakers. (D) Beakers filled with sterilized soil. (E) Beakers sealed with aluminium foil and incubated at 25°C. (F) Dead larvae into petri dishes collected from sand bioassay for dissection. (G) Cross section of nematode body showing longitudinal ridges by arrows.