IESI, the City's solid waste contractor, collects recycling material once a week on the same day as poly cart trash collection. Acceptable items include: Metal and aluminum cans (metal food and beverage cans composed of tin, steel or aluminum); plastic (soft drink liter bottles, and milk jugs); glass (clear, brown, blue and green bottles and jars); newspapers; magazines; catalogs; and other paper items (such as mail, envelopes, telephone books, chip board, cereal boxes, paper bags and slick or glossy newspaper inserts).