The solitary carpenter worm, Paropta paradoxa H. Schaeff. (Lepi-doptera : Cossidac) was monitored in fig orchards at Abou-Yousef dis-trict in the northwestern coastal region (Alexandria governorate) during three successive years (1996, 1997 and 1998). Moths started flight from mid April/late May until late October/late November resulting in two peaks of activity during early July and late August/early Septem‌ber. Two microbial control treatments with bacterial and fungus bioin‌secticides were evaluated for their efficiency on the reduction of the larval population on fig trees. Trials were carried out during two succes‌sive seasons (1998 and 1999). Bactospeine (Bacillus thuringiensis) at the rate of 2.0. 1.5 and 1.0 cc/liter of water reduced larval infestation by 83.3-86.7, 70.0-73.3 and 46.7-56.7 %, respectively. Biofly (Beatare‌ria bassiana) at the rate of 4.0, 3.0 and 2.0 cc& water reduced larval infestation by 43.3- 50.0, 33.3-36.7 and 20.0-23.3 %, respectively.