Repellent Activity of Deet and Biont-Based Mosquito Repellents in the Chinese Market Against the Asian Long-Horned Tick, Haemaphysalis longicornis

• DOI: 10.20944/preprints202503.1865.v1
• Publication Date: 2025-03-26T05:23:44Z
• Authors: Weiqing Zheng; Yuyang Zhang; Jingzhi Huang; Qinglu Wu; Jintong Fu; Yongwei Wen; Siyu Fang; Xiaoyan Yang; Qianfeng Xia
• Keywords: Haemaphysalis longicornis; DEET; Haemaphysalis

To investigate the repellent efficacy of commercially available mosquito repellents in China against H. longicornis, four representative DEET-based and biont-derived were selected. The study utilized a modified circular filter paper method testing device to establish an evaluation system for assessing effects each product three developmental stages longicornis: larvae, nymphs, adults. In our study, repellents, Johnson demonstrated highest repellency larvae within 1 hour, with average rate exceeding 80.14%. Yamei exhibited rates more than 91.11% nymphs surpassing other two DEET products. Repellency Longliqi Xiaohuanxiong fluctuated between 80.95% 100% at different time points. Yamei, Longliqi, achieved adults while showed slightly lower efficacy. significant variations efficacy: larval-stage ranged from 14.29% 88.89%, nymphal-stage 57.89% 100%, adult-stage 50% 79.49%. CaliforniaBaby efficacy, comparable or superior products, whereas Longhu weakest poor persistence. We further conducted persistence test CaliforniaBaby, found that it maintained >75% longicornis 6 h. This provides scientific evidence selecting tick practice, offers guidance purchasing commercial serves as reference developing safer, effective repellents.