Before you start to compost, you need to add the materials, like straw, sawdust, and crushed mushroom, into your dewatered swine manure at the ratio of 8:2. Then, you need to prepare a small amount of fermenting agent. Usually, the ratio of it and pig manure is 1:1000. But don’t be in a rush to put the fermenting agent in your compost. You need to mix it with rice bran at the ratio of 1:5 and then dilute it. Then, you can use the mixture as a kind of thinner and add it to your compost pile.