A gas chromatographic technique was employed as an analytical method to detect and quantify Pyridaben residues in cucumber, leaves, and soil under controlled greenhouse conditions in Iraq, using the recommended dosage, and to estimate the residual levels of Pyridaben after household processing. The samples were extracted and purified using a modified QuEChERS method, followed by analysis using gas chromatography with flame ionization detector and mass spectrometry for determination. Method validation studies yielded recovery percentages ranging from 93.9% to 98.5%. The matrix effects (ME)−12.21%, −8.82%, −5.3% for cucumber, leaves and soil respectively. The samples exhibited no signal suppression effect in all matrices, and relative standard deviation (RSD) ranged from 0.03 to 1.8%. The precision of the methods fell within the acceptable range of ≤20%. The methods demonstrated a good linearity with a determination coefficient (R²) 0.9991 for the 0.001–50 μg mL⁻¹ concentration range, pyridaben has limits of detection (LOD) of 0.001 μg mL⁻¹ and quantification (LOQ) of 0.003 μg mL⁻¹. Under greenhouse conditions, pyridaben residues were found to be 3.39, 8.24 and 1.39 mg kg⁻¹ for cucumber, leaves and soil, after 2hr from treatments at the suggested dose 25 ml / 20 L water. The residue levels fell below the maximum residue limit (MRL; 0.15 mg kg⁻¹) within 4 days. Pyridaben residue dissipation followed first-order rate kinetics The half-life (t _1/2) was 1.05 days, 1.03 days and 1.21 days for Pyridaben in cucumber, leaves and soil respectively. The change in pyridaben residue in cucumber samples during household processing (washing and peeling) processing was evaluated. A simple and accurate gas chromatographic method was employed after each process for determined Pyridaben using a flame ionization detector. The results indicated that washing reduced pyridaben residue by 29.41%, while 84.44% of Pyridaben residue removal by used peeling processes, showed by washing PF_S was 0.62 and peeling PF_S was 0.081.