The Simple Green is just a spray on foam. I spray it on and let it sit for a couple of minutes then use that Park Tools brush on the cogs, chain, and rings and it works reallly well.

I don't want to take the chain off b/c I understand that it weakens the link. The Simple Green and brush work really well, although not perfect. Plus, I use ProLinK Gold chain lube which cleans the chain while its being used. RIght after a wash though, I lube up with Finish Line since its a little smoother than the ProLink stuff.

Since I don't do any road riding, my chain tends to get pretty mucky with all the dirt and mud so, I have to keep it clean fairly frequently and so far, that's the best combination that I 've found to work and I'm pretty happy with it

Cheers,
Kristina

P.S. I sent you a PM a couple of days ago, wasn't sure if you had checked. I didn't want to clog the boards