How often should you clean your fridge? Weekly clear-outs, a deep clean and the right temperature

How often: spills now, old food weekly, a deep clean monthly

Fridge cleaning works on three timescales: wipe spills immediately, clear out old food weekly, and deep clean about once a month. The USDA’s Food Safety and Inspection Service (FSIS) says to wipe up spills right away and to make a weekly habit of throwing out perishable food that should no longer be eaten. The FDA’s advice is simply to clean the fridge regularly and wipe spills immediately.

When	What	Source
As it happens	Wipe up spills and drips	USDA FSIS, FDA
Weekly	Toss expired or spoiled food; check the thermometer	USDA FSIS, FDA
Monthly (every 1–3 months at most)	Shelves and drawers out, wash the interior and door seal	Whirlpool
A few times a year	Brush or vacuum the condenser coil	USDA FSIS

For the deep clean, Whirlpool’s care guide gives a range: every one to three months depending on how much you use the fridge and how often things spill, with a monthly check of the door gasket. A full family fridge sits at the monthly end of that range.

Why it matters even when the fridge looks clean: the FDA points out that Listeria can grow at refrigerator temperatures, and the longer food sits in the fridge, the greater the chance it will. Drips from raw meat and forgotten containers are exactly what you want gone.

How to deep clean a fridge

You don’t need special products — warm water and mild dish soap are enough. The FDA’s method is to wash the inside walls and shelves with hot water and a mild liquid dishwashing detergent, rinse, then dry with a clean cloth or paper towel.

1. If your model allows, unplug it or switch off cooling (Whirlpool’s advice). Move food to a cooler with ice packs while you work.
2. Take out shelves and drawers. Let cold glass shelves warm to room temperature before washing — Whirlpool warns against running hot water over cold glass.
3. Wipe the walls, door bins and door gasket with soapy water. Lift the gasket folds; crumbs collect underneath.
4. Wipe again with clean water, and make sure every part is completely dry before it goes back in.

Most fridge-freezers sold today don’t need manual defrosting, the FSIS notes. If yours does, never use a knife, ice pick or heating device to remove frost — it can damage the lining.

The right fridge temperature

Keep the fridge at 40°F (4°C) or below and the freezer at 0°F (−18°C), as the FDA recommends. The UK’s Food Standards Agency says 0–5°C. The setting on the dial isn’t a measurement, so use an appliance thermometer; the FDA and the FSA both suggest checking it at least once a week.

How you load the fridge matters too:

• Don’t overcrowd it. The FDA says to leave room for air to circulate.
• Keep perishables off the door. Door bins swing in temperature more than the main cabinet, so the FSIS says eggs belong in their carton on a shelf.
• Wrap raw meat. The FSIS recommends sealed containers or secure wrapping so juices can’t drip onto other food; the FSA adds that raw meat, poultry and fish go on the bottom shelf.
• Split big batches. Divide a large pot of soup or stew into small, shallow containers so it chills quickly (FSIS).

Getting rid of fridge odors

Most smells come from spoiled food or a leak, so find the source and throw it out before you clean. Covering food also stops odors from spreading between items, the FSIS notes.

If a smell lingers after cleaning, the FSIS suggests:

• Wiping the inside with equal parts vinegar and water.
• Washing the inside with a baking soda and water solution, including the gaskets, shelves, sides and door.
• Keeping an opened box of baking soda on a shelf to absorb odors.

If the smell keeps coming back, pull out every drawer and shelf and look again — something may still be hiding.

Leftovers: small containers, 3–4 days

Get leftovers into the fridge within 2 hours and eat them within a few days. The CDC says to eat leftovers within 3–4 days, and the FSIS storage chart lists 3–4 days for cooked leftovers, soups and stews. The UK’s FSA is more cautious: eat leftovers within 48 hours or freeze them. When the advice differs, the shorter window is the safer one, and the FDA’s rule stands either way — if a food looks questionable, throw it out.

Common mistakes

• Masking odors with air fresheners instead of finding what spoiled.
• Cleaning only what you can see. Gasket folds and the area under drawers hide the most mess.
• Packing the fridge solid, so cold air can’t move around.
• Rinsing cold glass shelves with hot water. Let them warm up first.
• Reaching for bleach or scouring powder when dish soap is enough — and safer for the finish.

How to remember

Tie the weekly clear-out to something you already do, like the night before grocery shopping or trash day. The monthly deep clean is what gets postponed, especially in a shared kitchen where everyone assumes someone else will do it.

Track “deep clean the fridge” as a monthly item in a list the whole household can see. Other kitchen upkeep fits there too, such as replacing your water filter cartridge, and the washing machine is on a similar monthly rhythm (see how often to clean a washing machine).