Fecha de publicación: 24/02/2022 Fuente: WIPO "beekeeper" The present invention relates to an evaporating apparatus developed to be used in controlling Varroosis that may cause to weaken gradually the bee colony throughout a season and even devastate the whole colony, if it is not properly controlled, after they settled on bodies of honeybees, wherein it ensures to evaporate the formic acid in a controlled manner.