No Park Chain Cleaner or special solvents. Entire bike is wiped down after every ride. I use a Connex chain so I can remove by hand, clean, relube and reinstall. Chain is pulled though my hand using a rag/t-shirt to get big gunk off, then run through my hand in a clean t-shirt and some rubbing alcohol. No need to deliberately degrease chain unless I do something like 100 miles in wet/crappy conditions. The rest of the drive train is wiped down using a clean t-shirt and rubbing alcohol (floss cassette, rings, pully wheels). Discs are wiped down with alcohol. Process takes 30 minutes. Bike stays looking like this I put on average 500 miles a month on it.