Sebo DUO The Perfect Team: The SEBO duo Brush machine and the carpet cleaning powder duo-P. The dry cleaning system of SEBO is excellent for both spot cleaning and cleaning larger areas. And you can walk on the carpet during the process. SEBO brings hygienic freshness to your carpet. What you should know: In a long-term study performed by the German Association for Allergy Research (GAF), it was shown that 6 months after a single treatment of duo-P, 7 out of 10 carpets proved to be free of dust mite allergens.