Outdoor Fresh With Powerful Natural Enzymes Not Tested on Animals Tough on Stains... Then It BiodegradesBio Pac"s stain remover w/powerful natural enzymes makes many stubborn stains and smudges a thing of the past. Bio Pac"s laundry stain remover is biodegradable and made without dyes or phosphates. Because it"s #2 plastic, you can recycle this bottle where recycling facilities exist.