First of all, I think it's great that you can fill your own detergent at Migros. Unfortunately, the station has a malfunction - at least in Brugg: after using the bottle for the first time, I don't empty it completely. There's always a bit of detergent left in it - and that's exactly what overwhelms the machine. It always says that the empty bottle is "full". We have to use a completely new bottle every time, which completely misses the point. Fill it ourselves, but take a new bottle every time. Then we could use a pre-filled bottle right from the start.....