Fuente: WIPO "varroa" This invention relates to a composition comprising: (a) a hydroalcoholic solution comprising a Quassia amara extract, wherein the solution comprises at least 80 %v/v of at least one alcohol, and (b) a vegetable oil. The invention also relates to a composition comprising: (a) a hydroalcoholic solution comprising a Quassia amara extract, wherein the solution comprises at least 80 %v/v of at least one alcohol, and (b) an aqueous sucrose solution. In addition, the invention relates to a method for preparing a hydroalcoholic solution comprising a Quassia amara extract, wherein the solution comprises at least 80 %v/v of at least one alcohol.