How to Clean and Deodorize Trash Cans So They Stop Smelling

October 21, 2026 · Residential and commercial cleaning in Bloomfield

Public domain, via Wikimedia Commons

A smelly trash can almost never gets fixed by a new liner or a can of spray. The smell is coming from bacteria growing in the residue stuck to the inside walls, the lid, and the rim, not from the air around it. The fix is to physically wash that residue off, let the can dry completely, and then use something that keeps bacteria from building back up. Do that and the smell is usually gone for good, or close to it.

The short version

Where cleaning it yourself wins

For a standard household trash can, doing it yourself is the obvious choice. You need hot water, dish soap, a stiff brush, and either white vinegar or a diluted bleach solution. A garden hose and a spot with drainage, like a driveway or the grass, make this a ten minute job once you've done it a couple of times.

It's also the right call when the smell is new. If a can started smelling bad after one bad week of forgotten chicken packaging or a leaking bag, a single good scrub-down usually solves it completely. There's no reason to pay someone for a problem that a hose and some soap will fix in one pass.

Doing it yourself also lets you deal with the lid, the wheels, and the area underneath the can, which is where a lot of the lingering smell actually comes from. Commercial pickup services that just rinse the outside of a bin often miss this.

Where hiring a service wins

If you've got several bins, a dumpster for a small business, or indoor bins at a rental property between tenants, a bin cleaning service starts to make more sense. These services usually use hot, high-pressure water and sometimes a sanitizing rinse, which gets into seams and corners that a hand brush can miss.

It also wins when the smell has been there a long time. Once residue sits for weeks or months, it can harden into a film that's genuinely hard to remove by hand, especially in the ridges at the bottom of a can. At that point the extra water pressure and heat does real work that a garden hose can't match.

Landlords and property managers juggling multiple units, and small businesses with a dumpster enclosure that neighbors or customers can smell, are usually better off paying for a recurring service than trying to keep up with it themselves. It's one less thing to remember, and it tends to get done on a schedule instead of only when someone finally complains.

What this looks like in practice

For most households, the process is straightforward. Empty the can completely and hose it out first to knock loose debris free. Mix hot water with dish soap, or make a solution with about a cup of white vinegar per gallon of water if the smell is strong. Scrub the inside walls, the lid, the rim, and the bottom with a stiff brush, paying extra attention to the bottom seam where liquid pools. Rinse thoroughly, then flip the can upside down to dry completely in the sun if possible. Sunlight and full drying matter more than people expect, since bacteria needs moisture to keep growing.

Once it's dry, a layer of baking soda in the bottom of the can, under the liner, helps absorb moisture and odor going forward. Some people use a few drops of essential oil on a cotton ball tucked in a corner, which helps a little but won't fix an underlying residue problem on its own. For outdoor cans, doing this wash-and-dry cycle every few weeks in warm months keeps smells from building up in the first place, since heat speeds up bacterial growth.

Indoor kitchen cans need the same treatment more often, especially ones used for food scraps. A liner that's slightly too small, or one that tears at the bottom, is a common and avoidable cause of recurring smells, since it lets liquid leak straight into the can.

For rental turnovers, common areas, or situations where trash and recycling bins are just one part of a bigger cleaning job, it often makes more sense to fold this into a broader move-in or move-out clean rather than treating it separately. We handle this at Shar's Cleaning Services as part of move-out cleaning around Bloomfield and greater Hartford, since a smelly bin is one of the things that gets flagged during a walkthrough.

FAQ

How often should outdoor trash cans be cleaned?

Every 2 to 4 weeks in warm weather is a reasonable target, less often in cold months since bacteria grows slower in the cold. If you notice a smell before that, clean it then rather than waiting for a schedule.

Does bleach or vinegar work better?

Both work. Vinegar is milder and fine for regular maintenance cleaning. A diluted bleach solution, roughly a quarter cup per gallon of water, is better for a can that's been neglected or had something spoil in it, since it disinfects more thoroughly. Don't mix the two together.

Why does the smell come back a few days after cleaning?

This usually means the can wasn't fully dry before a new liner went in, or there's still a layer of residue in a seam that got missed. Check the bottom edge closely and make sure the can air dries completely before use.