Originally Posted by Mann

Are you kidding me?. Are you guys that really concerned about the chemical mess and sludge generated by cleaning your chain?
The amount of toxic waste generated by cleaning your chain is minuscule at best. Step 1. never pour anything down the drain unless its water. Step 2. a citrus cleaner is satisfactory, and let the residual cleaner evaporate. Step 3. When you have enough sludge built up, which would probably take a number of years if not decades of heavy riding to create 5 gallons, Then start up your car and don't let it warm up to long because this will waste fuel, also increasing green house gas effects. Take the 5 gallons of waste to the nearest waste station. Providing its not to far away, because we woudn't want to offset the good you are doing for the environment by driving to far thus burning to much fossil fuel which also happens to be in short supply. Oh yea and have you ever happened to wonder about what all that fecal matter that each individual creates does to the environment?.