You also have to make sure that you have another person working with you, especially if you are going to work on a ladder or ledge. If no one is available to work with you, it is highly recommended that you use a telescoping wand to clean high surfaces. Lastly, always remember to clean the equipment after using. For example, if you are going to clean your garage s floor because of the grease and oil that leaked from your car, using a cold water pressure washer will make the job even more difficult as this will eventually harden the grease and make it waxy. The grease or oil will tend to stick more to the concrete floor which makes it even harder to remove even with the pressure washer. If you are planning on taking on a much tougher cleaning job, your best choice would be the hot water or steam pressure washer. Steam pressure washers are the most powerful type of pressure washer as it can dissolve stubborn or hard to remove deposits from almost any surface. If you can, try to get a tri-mode pressure washer. Now that you prepared the area for cleaning with pressure washer, the next step is to start the pressure washer can blast away the dirt, grease, and grime. Depending on how big your patio is, you will see that it takes a lot less time to clean the entire patio with a pressure washer. In fact, a few swipes of the wand and nozzle will immediately make the area clean. This is why you have to learn a few techniques in using a pressure washer. Doing so will help in letting you do the job a lot quicker and you also won t risk injuring yourself or other people around you. Before you actually start using the pressure washer, you may want to read and follow the guidelines set by the manufacturer. Don t wear your swimsuit or a board short and flip flops when using pressure washer. Instead, wear long pants and shirt. This will help prevent debris bouncing off the house to injure you. If you can, safety goggles must also be worn. You should also protect your hearing by using earmuffs and wear sturdy shoes.