Used to buy WD 40 in the gallon can for $10, but now it is double that. So, I now use kerosene. When I ran out of WD, it was the only thing I had on hand to put in my Park Cain Cleaner, besides gas. It dries quickly, cost $3/gallon, does not affect the chain, and is not too smelly. After the chain is dry apply your favorite lube. I do this every 2 weeks.