If you want to clean your garage s concrete floor, the traditional way is to get down on your knees and give the floor a good scrubbing. You will also need to use soap or detergents as well as chemical degreasers in order for you to make the job a little bit easier. The problem with chemical degreasers is that they are very dangerous. If you are going to use the pressure washer for washing a car, then you might want to settle for a less powerful model. A pressure washer exceeding 1500 pounds per square inch of pressure can easily strip off the paint on the car. The flow rate should also be considered. Usually, the higher the output pressure, the higher the flow rate will be. Manually scrubbing off the grease and grime from your garage s concrete floor or your patio s wood deck is very hard work. It will also use up a lot of your time and by the end of the day, there is a very likely chance that you won t accomplish a lot. This is why you have to take a look at pressure washers. If you have, then you may have done so with a scrub, a bucket full of soapy water, and a garden hose. You know that cleaning these mentioned places are hard, which is why you have to consider an easier alternative that will save you time and effort. So, what s the most efficient way to clean greasy garage and patio floors or remove hard-to-remove molds on your house s walls? You need to remember that using cold water pressure washers to get rid of grease on a particular surface will make the entire job a lot harder. This is because the water will be cold or in room temperature. This means that it will eventually turn the grease in to a hard and waxy substance that will even be harder to remove even with the pressure washer. Wear goggles, ear plugs, boots, jeans, and raincoat. This will protect you from minute objects that may be propelled by the intense pressure. Lastly, make sure that you clean the equipment before you store it. If you used detergents or cleaning chemicals such as chemical degreasers, you may want to run clear water through the entire system.