Solid detergent compositions and methods of preparing the same

Solid laundry detergents, dishwashing detergents and cleaners which are obtained by mixing gemini surfactants of the formula (I),

in which R¹ and R²,independently of one another, are linear or branched alkyl and/or alkenyl radicals having 4 to 22 carbon atoms, R³ and R⁴, independent of one another, each represents a hydrogen or an alk(en)yl radical having from 1 to 22 carbon atoms and n is a number from 5 to 400, with inorganic or organic carriers.