this might belong in 'components, wrenching' but I decided to post it here anyway. so these snap on brush wheel fluid chain cleaners. you know the ones. clear blue plastic with round, gear like brushes that spin with the chain. you guys use these? what solvent do you put in them? how often do you do a deep cleaning on your chain? what do you use to re-grease your chain? chain is brand new as bike has less than 20 miles, but i'm asking because I've been building a decent set of bike tools. ebay has these cleaners for less than 5 bucks. good investment?