Efficacy of entomopathogenic fungi products (i.e. Bio- Power (Beauveria bassiana), Bio-Catch (Lecanicillium lecanii) and Priority (Paecilomyces fumosoroseus)) against Spodoptera littoralis and Agrotis ipsilon larvae were evaluated under laboratory conditions. Four different concentrations i.e. 0.125x10⁹, 0.25x10⁹, 0.5x10⁹ and 1x10⁹ spores/ 1000ml D.W of each formulation were used against each pest under investigation and compared with control insects. The results obtained show that Bio- Power was the most effective product followed by Bio-Catch and Priority against S. littoralis 3^rd instar larvae, whereas , the LC_50,90 values were 0.2x10⁹ and 1.5x10⁹, 0.22x10⁹ and 4.6x10⁹ , 0.44x10⁹ and 4.7x10⁹  , respectively. While in case of A. ipsilon, Priority was the most potent product followed by Bio- Power and Bio-Catch, whereas, the LC_50,90 values were 0.14x10⁹ and 0.6x10⁹, 0.2x10⁹ and 0.9x10⁹ , 0.4x10⁹ and 9.7x10⁹ , respectively. Also, The results obtained show that percentage mortalities of  treated third instar larvae of S. littoralis with Bio- Power, Bio-Catch and Priority were 87.5,72.5 and 67.5 %, respectively ,within 6.3,8.2 and 7.4 days at the highest concentration used (1x10⁹ spores). However, The treated third instar larvae of A. ipsilon with Priority, Bio- Power and Bio-Catch achieved 100, 90.0 and 62.5 % mortality, respectively, within 5.3, 7.1and 3.9 days at concentration of 1x10⁹ spores. The different formulations had delayed effects, the percentage of pupae and adults emerged were significantly decreased with an increase in concentrations.