I use a Park chainbath with env. friendly citrus degreaser, it works wonders on any slabs below your chosen cleaning location! I then wash off any excess with water, then spray with Scottoiler FS365, then put it in the shed to dry overnight, preferably with the tumbledryer on. In the morning, I relube with the micklemethod. I'm currently on 2,500miles with a Sram PC1071 and 2,600miles with a Sram PC850, both have been checked for wear and aren't coming close to needing replaced. It's a bit of a faff, especially re-lubing but it keeps the drive-chain clean and I'm pretty pleased with the life-span I'm getting.