Liquid, alkaline, combined cleaner and disinfectant, in a strongly foaming composition. Although its alkali -content is not high, the considerable amount of integrated cleaning amplifier additives assures good cleaning effect while active-chlorine assures a distinguished antiseptic feature. Due to the low concentration of sodium ion (that derives from its content), the amount of sodium emitted with the sewage water is significantly reduced which makes its use beneficial both from the environmental and economic points of view. The outstanding characteristic of the detergent is that concerning prescribed instructions of application it does not attack the structural materials made of stainless steel, plastic and rubber. It is well applicable for the cleaning of the entire plant in all fields of meat, food processing and food industry, as well as in all fields of breweries, dairy and beverages industry in case of manual and high-pressure cleaning.