I used pedro's extra dry lubricant- But now I realize I forgot to wipe the next morning. My bike stays in my apartment too , but I use the basement or the front yard to clean, lol. I just look at some of my friends' chains and they look so clean...

In fact, here's an embarrassing story-- I took my bike in to get the derailleur adjusted, and I had to ask the mechanic if I put enough lube on, lol. In response, he lifts his hands to show me all the black marks He did say better too much than too little though...

thanks