This Brush is small enough to get into the gaps of many hard-to-reach corners. They are perfect for removing grease and dirt from window grooves,blinds,air vents,sliding doors for shower, doors,fridges,keyboards,sinks,etc. You can use a dry Brush or a wet brush according to the actual situation. If it is difficult to remove stubborn stains,you can use a brush dipped in liquid to clean it,or use a dry brush before scrubbing. The elevated ergonomic handle keeps your hand out of the way to prevent injury and gives you an unobstructed view. daily home cleaning, easy and effortless.