Chain maintenance came late in my biking journey! Yet I have come to regularly, say every 3 months, scrub the chain with kerosene and a grunge brush, which gets inside the chain and all sides, then spray on some degreaser, hose the thing down with water (mind the electronics!), ride for five minutes to get the water flung off. Let it dry out...not for too long. Then apply evenly on the top and bottom side Motul road chain lube. Its ready to go not long after, and I have tried plenty of lubes, and this stuff...never fails to stick, fling nothing off and last a fair while with the chain kept smart.