I found this product online and wonder if anyone has tried it, before I buy? See petsodorfree.com. Active ingredient is mojave yucca, and you spray it on the pet's food and it eliminates urine and stool odors, bad breath, stinky coats in dogs, etc.
i just took a look at the website, and it looks interesting. yes, it gets sprayed directly on the food (and even works with automatic feeders, dry food, wet food, seems like anything). and it has a peanut butter flavor.
i'd probably check with my vet, first, before purchasing. (print out the list of ingredients.)
i might just check this out with the vet, though, because ruby's gas will clear a room faster than you can say P.U.