The Lion Rock Aromatherapy Buckle comes with 2ml of citronella essential oil, which can be used on collars to prevent mosquitoes.

Instructions: Open the aroma button Put 2-3 drops of aromatherapy essential oil on the aromatherapy buckle filter Aromatherapy smell will diffuse through the filter element It can be used as a mask or buckled on the collar as a heart needle also smells *Drip citronella essential oil on the filter to emit a scent to help prevent mosquitoes *If you need to change the aromatherapy scent It is recommended to replace the aromatherapy buckle filter or wait for the residual odor of the filter to evaporate. *Essential oils may not be included due to the delivery conditions of the purchase area without notice