A:AnswerHello, thank you for your inquiry regarding the Dyson WashG1 Wet Floor Vacuum. We recommend using only water with the Dyson WashG1 Wet Floor Vacuum. Using any other liquid, including cleaners specifically made for hardwood floors like Bona, may damage the unit or affect its performance. For optimal results and to maintain the longevity of your vacuum, please adhere to the manufacturer’s guidelines. If you have any further questions or need additional assistance, please contact us via askdysonUS@dyson.com. We would be delighted to assist you further. Warm regards, Dyson Customer Support