A method of washing an object using a pressurized water source includes combining a cleaning fluid and the pressurized water and diffusing pressurized air into the combined cleaning fluid and pressurized water. The combined cleaning fluid and pressurized water diffused with the pressurized air is applied to the object. The cleaning fluid may also be carbonated and combined with the pressurized water prior to diffusing pressurized air into this combined mixture. The object being washed may, for example, be an animal such as a dog.