Go with what the pros know. Contractor garbage bags are used at construction sites all over the world to contain the toughest trash around. Garbage that would make an ordinary trash bag faint are all in day’s work to these super heavy duty garbage bags. They are 3.0 Mil thick, made from the strongest Linear Low Density resin. These bags are capable of holding extremely heavy loads containing nails, bricks, drywalling, carpeting, broken glass and more.