All of the carpet shampooers we have featured here require electricity to operate. So, that means you will start by plugging in the machine. But, before that, you should ensure that you have filled the machine with water and detergent. If you intend to clean for more than five minutes, ensure you wear protection. Turn the device on and start cleaning your carpet or chair upholstery. While the machine is still plugged in, avoid walking on the carpet barefoot until it is completely dry. We have a video in our buying guide for more detailed instructions and helpful hints on how to use a carpet cleaner.