I use the caps for a long time and am really excited by the application. Simply a cap into the washing drum, or at starkverschmutzer laundry happy times two and there you go. The washing machine is nice and clean and the laundry there is also. In "normal washing powder" has always bothered me that the insertion was filthy properly after a while and you got the drawer never really clean, the work and the dirt you have not thanks to the caps. Unfortunately, the Caps are really, really expensive. I have now in the drugstore discovered a similar product of the house brand which is as economical and is used the same way but is much cheaper. Therefore, I have now changed the product. But this was only a price decision. With the wash performance, the use of Persil etc. I was very pleased!