Disclosed is the use of disinfectant compositions as a virucide, particularlyagainst polio viruses, containing a) at least one amine and/or quaternaryammonium salt of general formula (Ia) or (Ib), in which R1 represents C6-18alkyl, R2 represents benzyl or C6-18 alkyl, R3 represents C1-18 alkyl or -[(CH2)2-O]nR6, with n = 1-20, R4 and R5 independently represent C1-4 alkyl, R6represents hydrogen or optionally substituted phenyl, and A- represents amonovalent anion or an equivalent of a polyvalent anion of an inorganic ororganic acid； and b) at least one alkanolamine of general formula (II), inwhich n and optionally m and o independently have the value 2 or 3 and x and yindependently have the value 0 or 1, or a corresponding salt； at a mass ratioI:II of 20:1 to 1:20. Said compositions also have good bactericidal andfungicidal qualities, even when used at low concentrations.
