A pre-wash is the ideal way to clean up a muddy bike: with a hosepipe and low-pressure jet, you can get rid of most of the dirt. A bucket and sponge can also do the trick. The brushes are particularly useful for cleaning places difficult to access. It's easier to remove stubborn dirt if the bike has been cleaned beforehand with a special product. Important
during the pre-wash: a too powerful jet of water or cleaning with a high-pressure device are fatal for any bike. A high-pressure jet introduces water and dirt into places where they would never find their way themselves, for example, in the bearings.