How to Clean Trash Cans: Indoor and Outdoor Bins — Deep Clean, Deodorize, and Prevent Odors
A dirty trash can is one of the most overlooked sources of household odors and bacteria. Even with regular bag changes, organic residue builds up on the can’s interior walls and base, creating a persistent smell and a breeding ground for bacteria, mold, and flies. This guide covers how to deep clean every type of trash can in your home — kitchen, bathroom, and outdoor bins — plus a maintenance routine that keeps them odor-free between full cleans.
What You’ll Need
- Garden hose or bathtub access
- Dish soap or all-purpose cleaner
- White vinegar
- Baking soda
- Long-handled scrub brush
- Rubber gloves
- Old rags or paper towels
- Disinfectant spray
- Trash can liner (new)
Safety and Precautions
Wear rubber gloves throughout this process — trash cans harbor E. coli, Salmonella, and Listeria in organic residue. Do not use bleach inside plastic trash cans without diluting it to at least 1 cup per gallon of water — undiluted bleach degrades plastic over time and can cause the liner to stick. Never mix bleach with vinegar or ammonia-based cleaners — this produces toxic gases. Work outdoors or in a well-ventilated space when using any disinfectant. Wash your hands thoroughly after cleaning regardless of glove use. For a reminder of which cleaning products should never be mixed, see our guide on cleaning products to never mix.
How to Clean Trash Cans — Step by Step
Step 1 — Empty, Remove the Liner, and Do a Dry Wipe-Down
Remove the trash bag and take the can outside or to your bathtub or utility sink. Before adding any water, wipe the interior walls and bottom with a dry paper towel to remove as much loose residue as possible. This step prevents residue from spreading when water is added and makes the scrubbing step significantly more effective. Check the can’s exterior, lid, and lid hinge — these surfaces collect drips and touch-based grime that most people never clean.
Step 2 — Rinse With Hot Water
Rinse the interior of the can with the hottest water available. Hot water loosens organic residue and helps dissolve grease. For outdoor bins, a garden hose works well. For indoor kitchen or bathroom cans, the bathtub or utility sink is most practical. Swirl the water around the interior and pour it out — do not pour down the kitchen sink drain if the rinse water is heavily contaminated with organic waste.
Step 3 — Scrub With Dish Soap and a Long-Handled Brush
Apply a generous squirt of dish soap to the interior bottom and walls of the can. Add a small amount of hot water and scrub vigorously with a long-handled scrub brush, working from the top of the walls down to the base. Pay particular attention to the seam where the wall meets the base — this is where organic residue concentrates most heavily. Scrub the lid interior and the hinge mechanism. For stubborn grease deposits, a paste of baking soda and dish soap applied directly to the residue and left for 5 minutes before scrubbing is highly effective.
Step 4 — Disinfect
After scrubbing, spray the interior walls and base with a disinfectant spray or a solution of 1 cup of white vinegar per quart of water. Leave the disinfectant in contact with the surface for at least 5 minutes before rinsing. For kitchen trash cans that handle food waste, this step is essential — dish soap cleans but does not reliably kill bacteria. White vinegar is effective against many common household bacteria and is safe for most plastic and metal surfaces. For outdoor bins that have had rodent or pest contact, use a diluted bleach solution instead of vinegar.
Step 5 — Deodorize
After the disinfectant rinse, sprinkle 2 to 3 tablespoons of baking soda on the interior bottom of the can and leave it for 10 minutes before the final rinse. Baking soda neutralizes acidic odor compounds that soap and disinfectant do not address. For persistent odors that survive this process — common in outdoor bins that have held spoiled meat or fish — pour half a cup of undiluted white vinegar into the bottom of the clean can, swirl to coat the walls, and let it sit for 15 minutes before the final rinse.
Step 6 — Rinse and Dry Completely
Rinse the interior thoroughly with clean water. Then dry the can completely before inserting a new liner. This is the step most people skip — replacing a liner in a still-damp can creates exactly the humid, organic-residue environment that mold and odor bacteria need. Turn the can upside down outdoors in sunlight for 30 minutes, or wipe dry with clean rags and leave the lid open for 1 to 2 hours before replacing the liner.
Step 7 — Ongoing Maintenance to Prevent Odor
The deep clean process described above should be done monthly for kitchen and outdoor bins, and every 2 to 3 months for bathroom cans. Between full cleans, place a few tablespoons of baking soda in the bottom of the can under the liner to absorb odors continuously. Sprinkle a few drops of tea tree oil or lavender oil on the base of the liner for antimicrobial benefit and a light scent. Always double-bag raw meat and seafood before placing them in the kitchen bin. For outdoor bins, keep lids tightly closed and place a cedar block or dryer sheet in the base to repel insects.
Cleaning by Trash Can Type — Quick Reference
| Can Type | Frequency | Best Cleaner | Special Notes |
|---|---|---|---|
| Kitchen (indoor) | Monthly | Dish soap + vinegar disinfect | Dry completely before re-lining |
| Bathroom (indoor) | Every 2–3 months | Disinfectant spray + wipe | Wipe weekly with damp cloth |
| Outdoor garbage bin | Monthly (warm months) | Dish soap + diluted bleach rinse | Hose out after pick-up day |
| Recycling bin | Every 2–3 months | Dish soap + hot water rinse | Rinse cans and bottles before recycling |
| Compost bin | Weekly | Baking soda + vinegar spray | Never let organic waste sit more than 7 days |
Pro Tips and Common Mistakes
- Skipping the dry pre-wipe spreads residue. Dry-wiping before adding water removes the concentrated organic matter that causes the worst odors and bacteria growth.
- Replacing the liner in a wet can guarantees odors. Complete drying before re-lining is the single most impactful step for long-term odor prevention.
- Baking soda under the liner prevents between-clean odors. Two tablespoons under every new liner costs almost nothing and absorbs odors continuously until the next clean.
- Outdoor bins develop fly problems when not regularly cleaned. Flies lay eggs in organic residue on the can walls — cleaning monthly during warm months and rinsing after every pick-up day is the most effective fly deterrent.
- Double-bagging raw protein waste is the most impactful habit. The majority of severe trash can odors trace back to meat, seafood, or dairy residue from punctured or leaking bags.
Troubleshooting
Smell persists after cleaning. The odor is inside the plastic or metal rather than on the surface. Fill the can with a solution of half cup baking soda per gallon of hot water, let it soak for 2 hours, then scrub and rinse. For plastic cans that have absorbed odor deeply, a 24-hour soak in diluted white vinegar (1 cup per gallon of water) often resolves what scrubbing alone cannot.
Maggots in outdoor bin. This requires immediate action. Empty the bin completely, move it to the yard, and rinse with a garden hose. Apply diluted bleach solution (1 cup per gallon) to the interior, leave 15 minutes, then rinse thoroughly. Maggot presence means a liner leak allowed direct contact between organic waste and the can wall — double-bag all food waste going forward.
Frequently Asked Questions
How often should you clean a kitchen trash can?
Deep clean a kitchen trash can monthly. Between full monthly cleans, wipe the interior sides and base with a damp cloth sprayed with disinfectant every 2 weeks, especially after disposing of raw meat or seafood. The exterior and lid should be wiped down weekly as part of your regular kitchen cleaning routine. The combination of monthly deep cleans and weekly exterior wipes keeps bacteria counts and odors well controlled.
What is the best thing to put in the bottom of a trash can to prevent odors?
Two to three tablespoons of baking soda placed directly under the trash liner is the most effective and inexpensive ongoing odor absorber. It works by neutralizing acidic odor compounds continuously throughout the liner’s use. Activated charcoal discs placed under the liner work even more effectively but cost more. Adding a few drops of essential oil (tea tree or lavender) to the base provides light antimicrobial benefit and fragrance without masking underlying odors.
Can I use bleach to clean a plastic trash can?
Yes, but always dilute it — use 1 cup of bleach per gallon of water. Undiluted bleach degrades plastic over time, causing it to become brittle and developing micro-surface cracks that actually harbor more bacteria. Diluted bleach is effective at killing bacteria and sanitizing the surface. Never use bleach on a can that still has vinegar inside — this combination produces chlorine gas. Rinse completely after bleach treatment.
How do I get rid of maggots in a trash can?
Immediately empty the can and move it outdoors. Rinse with a garden hose to remove maggots. Apply diluted bleach solution (1 cup per gallon), let sit 15 minutes, then rinse thoroughly. Maggots are fly larvae — they hatch from eggs laid in organic residue that came into direct contact with the can wall due to a bag leak or overflow. Prevent recurrence by always double-bagging meat waste and rinsing the can after every garbage pick-up day during warm months.
How do you stop outdoor garbage cans from smelling?
The most effective long-term approach is a combination of monthly cleaning, rinsing after pick-up day while the can is already empty, placing baking soda under liners, and double-bagging all food waste. Cedar blocks or dryer sheets placed in the base repel insects. Keeping lids securely closed prevents animals and flies from accessing the interior. In hot summer months, increase cleaning frequency to every 2 weeks for outdoor food-waste bins.
Conclusion
A clean trash can takes about 15 minutes per month and eliminates one of the most persistent and avoidable odor sources in any home. The most important steps are the dry pre-wipe, thorough scrubbing with dish soap, a disinfectant contact time of at least 5 minutes, and complete drying before replacing the liner. Add baking soda under every new liner and the results last.
For more kitchen odor control, see our guides on eliminating household odors room by room and how to clean recycling bins to prevent the second most common kitchen bin odor source. For a complete kitchen maintenance routine, see our kitchen cleaning tips guide.
