Use of a compound of malonitrilo derivative or a Salt that for Combating animal pests.Claim 1: a compound of the formula (1) or a Salt or n-oxide where is this, and not substituted phenyl or substituted with 1, 2, 3, 4 or 5 r\u2075 naphthyl substituents or replaced or not replaced with 1, 2, 3, 4, 5, 6 or 7 r\u2075 substituents Q is a Aromatic Heterocyclic Ring 6 members containing 1, 2, 3 or 4 nitrogen Atoms in the ring,Where the above-mentioned ring is replaced or not replaced with 1, 2, 3 or 4 substituents r\u2076 r\u00b9 is Hydrogen, halogen, Hydroxy alkyl, cyano, c\u2081\u208b\u2086, alquenilo c\u2082\u208b\u2086, alquinilo c\u2082\u208b\u2086 c\u2083\u208b\u2088, cycloalkyl, cicloalquenilo c\u2083\u208b\u2088 c\u2081\u208b\u2086, alkoxy, alqueniloxi C \u2082\u208b\u2086 c\u2081\u208b\u2086tio c\u2081\u208b\u2086, alkyl, alkoxy carbonyl,In which the carbon Atoms of the aliphatic or cycloaliphatic Radicals mentioned above are unsubstituted or substituted with 1, 2 or 3 r\u2077 substituents R\u00b2 is Hydrogen or Halogen, or r\u00b9 and R\u00b2 constitute, together with the carbon Atom to which they are United, a group or a methylene Group C Iclopropilo r\u00b3 is Hydrogen, halogen, Hydroxy alkyl, cyano, c\u2081\u208b\u2086, alquenilo c\u2082\u208b\u2086, alquinilo c\u2082\u208b\u2086,C\u2083\u208b\u2088 cycloalkyl, cicloalquenilo c\u2083\u208b\u2088, c\u2081\u208b\u2086 alqueniloxi c\u2082\u208b\u2086 alkoxy alkyl, alkoxy, c\u2081\u208b\u2086tio, c\u2081\u208b\u2086carbonilo, where the carbon Atoms of the aliphatic or cycloaliphatic Radicals mentioned above are unsubstituted or substituted with 1, 2 or 3 replaced Before r\u2077 r\u2074 is Hydrogen or Halogen, or r\u00b3 and r\u2074 constitute, together with the carbon Atom to which they are UnitedA methylene group or a group ciclopropilo each is independently r\u2076 r\u2075, halogen, Nitro, cyano, azido, SNA, sf\u2085, alkyl c\u2081\u208b\u2086, alquenilo c\u2082\u208b\u2086, alquinilo c\u2082\u208b\u2086, wher
