Innovation in using essential oil formula from plants to prevent external parasites of chickens in farm conditions It is the use of essential oil extracted from cloves as the main ingredient, essential oils from cinnamon and turmeric as secondary ingredients, then mixed with surfactants, analyzed particle size and measured Zeta Potential charge with Nano Plus Zeta/Nano Particle Analyzer It was tested with external parasites of chickens in the laboratory until the appropriate formula was obtained, and then used with laying hens in farm conditions compared with cypermethrin. It was found that egg production performance, blood values, and residues in chicken eggs found that using the nano plant essential oil formula was no different from using chemicals.