Finish Line Ecotech Degreaser
Strong, yet safe. A new technology degreaser that quickly cleans without damage to plastic or rubber components. Strong enough for the grimiest metal parts, yet safe enough to clean parts with rubber o-rings and seals, urethane elastomers, and painted surfaces, etc. Exceeds all V.O.C. and California CARB regs.
I've never used degreaser before, so I have no frame of reference on how well this is supposed to work, but it got my chain, frame, and sprockets quite clean and free of black greasy gunk with ease. I poured some in container and watered it down slightly and dipped my brush in it. Even after my mixture got totally opaque and black, it still continued to remove gunk, though it left behind black residue after rinsing, obviously because I was dipping the brush back in so much. Later, a small undiluted amount on a paper towel got rid of the residue very well. This time I just dried it without rinsing. It has a smell similar to soybean oil, in case you're skeptical about what they claim it's made of.
This has been one of my favorite chain cleaning fluids to use with my Park chain scrubber. It works very well and combined with my Phil's lube makes for an eco-friendly combination.
Works great like any degreaser should. Affordable price too. More companies (especially in the bike industry!) should use environmentally friendly cleaners. Comparable to the White Lightening degreaser I've used in the past.