From the makers of Clorox products. Green Works - powerful, natural cleaners without harsh chemicals fumes! Our products harness their cleaning power from the most effective natural sources, such as: coconut-based cleaning agent. Essential lemon oils. Plant-derived acids. Natural thickener. Filtered water. Green Works - taking steps toward a happy, healthy world! Our products are not tested on animals. Green Works Natural Toilet Bowl Cleaner removes, rust, mineral deposits and hard water, and safe for plumbing and septic system. Contains no phosphorus. Contains no bleach. Made in the USA.