Plants of the genus Solanum, within which the Lulo perro (Solanum marginatum) is found and is considered as a weed species, contain saponins which have fat emulsifying properties similar to soap. This feature was used to evaluate the sanitizing power of the alcoholic extract of the fruit as a biodegradable cleaner which is very useful for industrial purposes. The sanitizing potential of the cleaner preparation was assessed using the procedure described by Carrascal, Paez y Burbano (1998), and it was found to have optimum antimicrobial effectiveness conditions: a 10% concentration and a 6 minute contact time over gram negative bacilli microorganisms which represent a maximum inhibition of 99 58%. When comparing the effectiveness of the product against two well-known commercial sanitizers. (Mat-98® and Germigel®), a similar response was found. Using crude hydrolysis of saponin, present sapogenins were released, the crystals obtained were analyzed using infrared spectroscopy, and melting point was determined. These results coincided with the Hecogenin.