Camel tick, (Hyalomma dromedarii Koch) treated with Huwa-San TR50 under laboratory conditions. Picture A shows non-treated H. dromedarii (control), Picture B, Picture C and Picture D show the cuticle damage of H. dromedarii treated with 1000, 12000 and 14000 ppm of Huwa-San TR50, respectively. Pictures were taken after 24 h of direct spray treatment.