Counteractions of beta cyclodextrin (βCD) to the light intensity's impact were investigated on the nutritional indices of Acokanthera spectabilis (Hochst.) extract and chlorfluazuron 5% EC againstthe 4^th instar larvae of Spodoptera littoralis (Boisd.). The LC₁₀ value of chlorfluazuron 5% EC (0.92 mg L^-1) transcended A. spectabilis extract (0.56 mg L^-1) and vice versa for the LC₉₀ values. The most abundant HPLC-compounds of the extract were ferulic acid (2082.49 µg g^-1), and ellagic acid (804.74 µg g^-1) as well aspalmitic acid (39.89%), and cis-vaccenic acid (14.05%) in GC-MS analysis. There was relative advantage for βCD addition at0.40 gm L^-1 to the sub-lethal concentrationsof the tested compounds, observed by their lowest relative potency and highest toxicity index. In darkness, 5000, and 10000 LUX, βCD-mixed extract affected all the larvae's nutritional indices, likewise βCD-mixed chlorfluazuron 5% EC at 10000 and 20000 LUX excluding dry gained weights, and relative growth rate. Equally highest alkaline phosphatase levels at 48 hrs of exposure to βCD-mixed extract and chlorfluazuron 5% EC were 125.73 and 131.00 U L^-1, respectively. Semi-field trials along two seasons showed equally high residual toxicities in net and βCD-mixed extract, as well as highest residual toxicity, and persistency in βCD-mixed chlorfluazuron 5% EC. Spray application of these compounds was safe for the chlorophyll-leaf content, with observed augmentation in all extract treatments. Ultimately, βCD-mixed chlorfluazuron 5% EC could enhance the controlling S. littoralis, while the A. spectabilis extract could be applied alone under light intensity.