Reinford Farms has 700 dairy cows. As you can imagine, they produce a lot of ... um... material to be converted into electricity. Dani Fresh for WHYY hide caption toggle caption Dani Fresh for WHYY The Salt Waste Not, Want Not: Why Aren't More Farms Putting Poop To Good Use? NewsWorks WHYY April 23, 2017 Digesters convert livestock manure into electricity. Farmers can use it to power their operations or even sell some back to the grid. But some have found the technology too pricey to maintain.