It is very common to use artificial flowers for decoration, or buy cheap artificial plants or fake plants for outside. After some days, flowers or plants will unavoidably have some dust on the surface. And it will think about how to clean it. For most high quality silk flowers or fake plants small, you only need to spray little water on the surface and then wipe it dry. And  you could also just use hairdryer to blow away the dust.  It is very simple. But if it is flocked items, you don’t need to do any cleaning. The white powder on the surface is to make it look real.