I've owned my bike for about 2 years now and haven't done a legit cleaning. I wipe down the chain every couple rides and relube it. However I want to get a real good cleaning in. I was wondering if I take the wheels off and just spray it down is that alright? I've read that it is but the idea of rust really scares me. Also, i wipe it down occasionally with Simple Green. Is this OK to use on the chain? My chain is filthy and I really need to get in there and clean it up really well. If Simple Green isn't good, what is?

Thanks in advance!!