Unfortunately, I am a typical Marketing victims ... buy accordingly usually what advertising promises. So I bought the expensive stehts Chain Cleaner (about 9, - EUR / 250 ml) until I have used this time by accident brake cleaner from Würth. It works immediately and thoroughly, simply outstanding.
In particular, I use the cleaner to clean the bike. In an instant the chain and derailleur is completely exempt from oil and grease. For the pre-I recommend the cleaning cloths of Würth ...
Also, of course, also for cleaning of disc brakes :-)
