Miele Softtronic Washing Machines against Persistent Stains. In the Miele Softtronic Washning Machines radio spots we focused on the soft and gentle cleaning feature of the machines. In each spot, we hear the dialogue of the washing machine and the stain. This is a weird kind of personification. Washing machine is talking to the stains in a very polite and intelligent way and in the end assuring them to leave the clothes they are on willingly. In each spot, the stains are 'persistent' about staying and every time the washing machine is 'gentle' enough to make them leave without using force.