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Choosing the right trash bag thickness is just as important as choosing the correct size. A bag that is too thin may tear, leak, or puncture under pressure, while a thicker bag can handle heavier, sharper, and bulkier waste more effectively.
In this guide, we’ll explain what “mil” means, compare light-duty and heavy-duty trash bags, and help you choose the right thickness for your specific needs.
Contractor trash bags are designed for demanding jobs that involve sharp, heavy, or bulky debris. These extra-thick bags are commonly used on construction sites, renovations, landscaping projects, and industrial cleanup jobs.

What Does “MIL” Mean in Trash Bags?
“Mil” is a unit of measurement used to describe the thickness of a trash bag. One mil equals one-thousandth of an inch. In general, the higher the mil number, the thicker and stronger the bag becomes.
Thicker trash bags are better for sharp, heavy, or wet waste, while thinner bags work well for lightweight household trash.
The chart below compares light duty, medium duty, and heavy duty trash bags by thickness, strength, and recommended use case to help you quickly choose the right option.

Light Duty Trash Bags (0.7–1.0 Mil)
Light duty trash bags are designed for lightweight everyday waste such as paper, tissues, packaging, and bathroom trash. These bags are commonly used in bedrooms, offices, and small trash cans.
They are affordable and flexible but are not recommended for sharp objects or heavy garbage.

Medium Duty Trash Bags (1.0–1.5 Mil)
Medium duty trash bags offer a balance between flexibility and durability. They are commonly used in kitchens, offices, schools, and small businesses where trash loads are moderate.
These bags can handle regular household waste and some heavier materials without tearing easily.

Recommended Bags by Thickness
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