We have two guinea pigs, Cinnamon and Rosie McPig. They have two jobs. One is as therapy pigs. They snuggle, they make cute noises, they make me laugh when I get home from work. Job number two, at which they excel, is pooping. These two animals weigh maybe a pound each and they produce much more than an animal that size should be able to. Anyway,this material along with the hay and any uneaten veggies is used to mulch the herb garden and the flower garden. The piggies have been with us less than a year and the areas of our yard where the pig treatment has been applied look good.