Some zoos have become creative in composting and marketing the manure of their exotic animals. The Zoo-Doo Compost Company sells composted animal manure to novelty buyers and to organic gardeners. More than 160 zoo stores and 700 other retail outlets carry Zoo-Doo for sale to gag-gift buyers. In addition, gardeners buy larger quantities of the Zoo-Doo, which has a favorable nutrient ratio of 2-2-2 (2% each of nitrogen, phosphorus, and potassium), and is an excellent soil amendment as well as an organic fertilizer.
Researchers, environmentalists, and program administrators all agree that creativity will be one of the keys to solving many waste problems. Many landfills are nearing their carrying capacity, and most of the older ones will be closed by the year 2005. Recycling, composting, and reusing are all environmentally and economically beneficial ways of greatly reducing the volume of the solid waste stream.
See also Waste management.
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