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A trash can with a neatly fitted liner

Trash bag fit, explained

Why a bag slips or leaks, and how bag and can fit together.

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Bag size and can size

Bags and cans are both sold by capacity. A bag that matches the can's capacity and opening covers the rim and reaches the bottom. The can's maker may list the bag size it was made for.

Rims, rings, and holders

Some cans hold the bag with a rim, a ring that clamps over it, or a holder inside the lid. These keep the bag from slipping into the can. The manual shows how each one works.

Leaks under the liner

Texas A&M AgriLife Extension lists the wet bottoms of trash cans, when plastic liners have leaked, as a common fruit fly breeding site. It says to check under liners in garbage containers and, if necessary, use soap and water to remove all organic residues.

Plastic bags and children

The AAP says never to leave plastic bags lying around the house, because they can suffocate children. It says to knot them before you throw them away, so a child cannot crawl into them or pull them over their head.

Food bags and dogs

The FDA says thin food bags, such as chip, cereal, and snack bags, can wrap around a dog's nose and mouth and suffocate it. It says dogs are typically more likely than cats to sniff out food bags.

Old bags and recycling

EPA says plastic bags, wraps, and films cannot go in your household recycling bin, and that retail and grocery stores often accept them for recycling.

Bags and liners. Per the AAP, Texas A&M, and EPA.

FAQ

The bag may be smaller than the can's opening, or the can has no rim or ring to hold it. Check the bag size the maker lists.
No. EPA says plastic labeled compostable is generally meant for an industrial or commercial composting facility, and should not go in a home compost pile unless the label says it can. Our composting guide covers this.

General information only. Keep a trash can that holds spoiled food, sharp objects, or batteries behind a lid a child cannot open, or out of a child's reach. Knot plastic bags before you throw them away, and keep button and coin batteries out of reach of children. Keep cleaning products in their original packaging, out of sight and reach of children and pets, and never mix cleaning or disinfecting products. Read and follow the label on every cleaner and the maker's manual for your can, including how to change or remove its batteries. A swallowed button or coin battery needs medical help right away; do not delay. If you think a child swallowed something harmful, call Poison Help at 1-800-222-1222; if the child is unconscious, not breathing, or having convulsions or seizures, call 911. If a pet did, call your veterinarian or a pet poison control center right away. In an emergency, call 911.

Next: sizes

Capacity, footprint, shape.