Arthropods serve as highly efficient vectors for a wide range of life-threatening pathogens, including parasites and viruses, worldwide. Hyalomma dromedarii Koch is the primary tick species that infests camels. In this study, we evaluated the insecticidal activity of commercially available deltamethrin (DM), cypermethrin (Cym), and α-cypermethrin (α-Cym) against adult H. dromedarii using in vitro immersion bioassays. Fresh concentrations of each synthetic insecticide (25, 50, 100, and 150 ppm) were prepared for testing. In the toxicity assessment, DM-treated ticks showed higher mortality compared to Cym, with α-Cym also being effective but less so than DM. Mortality rates increased at 48 hours post-treatment, compared to 24 hours, with LC50 values at 24 hours for DM, Cym, and α-Cym being 66.93, 129.72, and 81.08 ppm, respectively. At 48 hours, the LC50 values were 4.23, 37.25, and 3.12 ppm. These results indicate that DM and α-Cym are more potent than Cym against adult H. dromedarii.
