Abstract: The present invention concerns an ecological benzineless quaternary ammonium disinfectant cleaner comprising quaternary ammonium compound(s) either (i) including octyl decyl dimethyl ammonium chloride, dioctyl dimethyl ammonium chloride and didecyl dimethyl ammonium chloride, in a relative proportion of about 2:1:1 by weight, or (ii) consisting essentially of quaternary ammonium compounds consisting essentially of didecyl dimethyl ammonium chloride; the disinfectant cleaner also comprising a sequesterant such as polycarboxylates and diamines and combinations thereof; a surfactant; a builder such as silicates, carbonates and citrates and combinations thereof; and preferably a solvent such as glycol ether series.