If you want to know how to use a soap dispenser on GreenWorks pressure cleaner, here are a few things you should know. The solution used in the dispenser is thicker than regular soap. You will need to dilute the soap with water if you want to use it. 80% water to 20% is the recommended ratio. Do not use bleaching powders in your machine as they can damage the machine and the soap dispenser. Do not use forcefully when using it because it will damage the pump.