Pressure washers should always be used with extreme care as they are very powerful machines that can cause serious injury if safety instructions are not followed. Always wear protective clothing like goggles and boots, and do not let children operate pressure washers. Be careful of wet floors and avoid electric shock by not using damaged cords or spraying electrical outlets with water. Never point the high pressure water stream at people and always use detergents made for pressure washers. Properly maintain pressure washers and do not operate them under the influence of drugs or alcohol.