The instruction manual on page 17 states regarding cleaning the filter and filter holder: "Do not use detergent. This will remove the coffee oils that suppress metallic odors." Operation confirmed. A simple and stylish espresso machine. - Brand: DeLonghi - Color: Black - Type: Espresso Machine - Accessories: Instruction manual, filter holder, 2 types of filters, tamper - I will include an extra tamper that I no longer use. (See photo 1, the one in the center bottom of the photo.) Thank you for viewing. I am selling this to organize my home. It was stored in a dark room after being used a few times. The box is not included. There are some stains and signs of use. Please check the images. * There are no smokers in the household. * Although I have cleaned and disinfected the machine after use, please refrain from purchasing if you are sensitive to minor imperfections due to my personal management.