THE PRESENT INVENTION RELATES TO NOVEL ACTIVE COMPOUND COMBINATIONS COMPRISING AT LEAST ONE KNOWN COMPOUND OF THE FORMULA (I) IN WHICH X RI TO R4, A , N, Y ,AND M AREAS DEFINED IN THE DESCRIPTION, AND AT LEAST ONE FURTHER KNOWN ACTIVE COMPOUND FROM THE CLASS OF THE FIPROLES , WHICH COMBINATIONS ARE HIGHLY SUITABLE FOR CONTROLLING ANIMAL PESTS SUCH AS INSECTS AND UNWANTED ACARIDS.