April 18, 2008 - With no good place to toss plastic bags, "they end up being litter," Mrs. Trex says its average 500-square-foot composite Trex deck contains about 140,000 recycled plastic bags. Green Living, 1904 Abrams Parkway and online at Clean Air Gardening, www.cleanairgardening.comSkooperbox ($11.99 for medium, $12.99 for large) skips plastic completely.