The in vitro efficacy of deltamethrin and alpha-cypermethrin against engorged female Haemaphysalis qinghaiensis ticks (Acari: Ixodidae)

- We firstly assessed the efficacy of 2 pyrethroid pesticides against H. qinghaiensis.
- The LC50 and LC90 of 2 pesticides against engorged H. qinghaiensis were determined.
- Our results enable the updating of current protocols for tick control in China.