1. Construction sites: Contractor bags are frequently used to dispose of debris from construction, demolition, or landscaping projects.

2. Industrial settings: These bags are also commonly used to dispose of general waste from factories or warehouses.

3. Roll-off containers: Contractor bags are often used to line roll-off containers, which are large dumpsters used to dispose of large quantities of waste at once.

4. Landscaping: Contractor bags are useful for collecting yard waste, such as leaves, branches, and grass clippings.

5. Cleaning: These bags are also handy for disposing of cleaning supplies and other hazardous materials.

Overall, contractor bags are a versatile and durable choice for handling a wide range of waste and debris.