SoyClean makes an all-natural, soy-based lubricant, which penetrates just as well as more toxic products. We're talking about the kind of lubricant you use on gears, valves and chains. When using it, there are no harmful fumes or vapors involved. And if you oil your bike with it, you won't be polluting your yard. It is priced at $6.49 for a 22oz spray bottle. SoyClean also makes soy-based paint strippers, strain removers, wood sealers and cleaners. Via MetaEfficient.