I'm with [MENTION=158672]FBinNY[/MENTION]. I just use paper towel to wipe the chain after every ride. Then if the chain looks dry, I lube it with air tool oil. If I ride every weekday, then the lube can be as frequent as once per week. That's it. I used to use a park chain cleaning tool. But read here that using solvents might cause more chain wear. Theory is that the solvent can carry more grime into the chain inner surfaces. I don't know if it's true or not. But the wipe routine is easier so that suits my laziness.