However, the beads do not last really long. In a 3-person household a Duftspüler (1x51g) has held about 1 1/2 weeks (there were 2 of 3 people leave). In "normal" situations they probably hold about 2 to 2 1/2 weeks. Means you pay ~ 9.50 for a little over 3 months (12.5 weeks). I find still just as under. Maybe they still go down to 8 to 8.50, then I will definitely set me a savings SUBSCRIPTION!
A mechanism for replenishment would be very nice, you would reduce the plastic waste and could even lower the price. :)
Conclusion: For singles and households to max. 3 people are definitely recommended the WC Frisch Power pearls!