Long-term recycling solution for polyester carpet becomes pressing with increased sales, but national director says: “The glass is half-full” It has been observed throughout history: Cleaning up one mess often creates another mess. To clean up a mess, carpet manufacturers have been recycling billions of discarded plastic bottles into polyester (PET) carpet every year. But discarded PET carpet is not recyclable. And it now accounts for 30 percent -- up from 4 percent in 2007 -- of the used carpet headed for landfills. Because 35 percent of the residential carpet market is now PET, which is cheaper but not as durable as recyclable nylon carpet, carpet manufacturer Mohawk has announced Continuum – it new, proprietary PET carpet. The proprietary process results in a more durable, cleaner PET carpet, the company says.