Okay... I may sound crazy but have you ever stepped into dog poop? I have MILLIONS of times. The reason we step into that massive lump of waste is because we can't see it! I would like to invent a food or a substance you mix into the food that would change a chemical in the dogs poop that would make it a flourescent color. I realize this would take a couple of scientists and a food company who would be willing to support me. If anyone knows anyone who would be interested in helping me......