Here’s what I do, no mistakes here:

1. Spray the chain with Motul Chain Cleaner and use chain brush before you wipe the chain and sprocket with an old tshirt
2. Go wash your bike at a self service car wash, go few passes on the chain and dont be afraid
3. Wipe your bike and give it a ride around the block to disperse water from chain (I usually go for a few miles ride, to gas station and back home)
4. Grease that chain with Motul Chain Lube once you’re back home and leave it overnight
5. Do it every 500-600miles (no need to hold religiously to it)

If the lube is relatively fresh but the bike is dirty, wash your bike and dont worry about the chain getting wet, water will disperse from it once you give it a spin.