Fuente: WIPO "essential oil or extracts" Patent 536489 Disclosed is the use of plant material derived from a plant in the family Caesalpiniaceae, Olaceae, Polygonaceae or Bursecaceae as a terrestrial molluscicidal and/or mollusc-repellant agent. Also described are molluscicidal and/or mollusc-repellant preparations comprising plant material having molluscicidal and/or mollusc-repellant activity and a particulate, wherein the plant material is obtained from Caesalpiniaceae, Olaceae, Polygonaceae or Bursecaceae, preferably Commiphora molmol or Commiphora guidotti.