4 Foolproof Ways to Clean a Greasy Microwave

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Household staples like vinegar, lemon, and baking soda can clean microwave grease without harsh scrubbing.
Commercial cleaners work too—just use microwave-safe formulas, avoid spraying electrical panels, and never let products dry on surfaces.
Clean spills and grease splatters quickly and cover food to prevent future messes and protect your microwave’s interior.

The microwave is likely one of the go-to appliances in your kitchen—so naturally, keeping it clean of grime and grease is essential. But what’s the best way to clean once those big messes happen? Below, our experts break down how to degrease a messy microwave using both natural methods and commercial cleaning products, along with the mistakes to avoid.

Michael Silva-Nash, president of Molly Maid, a Neighborly company
Lauren Houser, brand cleaning expert at Zep
Tim Conn, president and co-founder of Image One Facility Solutions, a provider of high-quality cleaning services

Method 1: Vinegar

This simple household staple can be an inexpensive cleaning powerhouse—including when it comes to a greasy microwave. Simply take a clean microfiber cloth, dampen it with water and white distilled vinegar, and wipe away any residue. "An alternative vinegar method is to fill a microwave-safe bowl with a half cup of water and a half cup of vinegar," adds Michael Silva-Nash, president of Molly Maid.

"Microwave the solution on high for five minutes, then let it sit for ten more minutes to coat the walls with acidic steam and make it easier to wipe away the grime," he says.

Method 2: Baking Soda

For more stubborn stains and baked-on grease, mix baking soda with water to create a paste-like consistency. "Apply it to the stubborn spots and let it sit for five minutes before gently wiping it off with a damp sponge or microfiber cloth," says Silva-Nash.

Method 3: Lemon

The acidity of the lemon juice helps to eliminate grease, while the natural oils will freshen and lift odors. First, fill a microwave-safe bowl with water and a freshly squeezed lemon and place it on the microwave turntable.

“Let the microwave run on high for two minutes,” Silva-Nash says. “Remove the bowl and turntable, then wipe down the microwave with a microfiber cloth dampened with water and white distilled vinegar to remove any remaining residue.”

To minimize future greasy messes, cover food with a microwave‑safe lid or paper towel before heating. "Use microwave‑safe containers and follow the manufacturer’s recommended cooking times to prevent splatter and overcooking," Houser suggests, which can cause heavy splatter and burnt smells.

Method 4: Commercial Cleaners

If you prefer to use a commercial cleaning product, only use those specifically made for microwave use, says cleaning expert Lauren Houser. When spraying, “avoid electrical components and the control panel," she adds. "For baked‑on grease, coat thoroughly, then let the product sit for two to three minutes to break down grime and caked-on messes."

Wipe the interior with a damp microfiber cloth or sponge, rinsing the cloth frequently. Once grease and cleaner residue are removed, allow the interior to air‑dry or wipe dry. "Don’t leave the cleaner on for longer than recommended or allow it to dry on the surface, as this can leave residue that is hard to remove," Houser warns. "If the grease is stubborn, repeat the application or use a soft brush."

Cleaning professional Tim Conn recommends avoiding harsh cleaners for your microwave. "Use mild, non-toxic or green cleaners as often as possible to reduce airborne toxins and environmental impact," he says. "Using overly harsh or strong chemical cleaners can leave residue or fumes in your microwave."

Allow the steam and cleaning product sit and do the work before you start scrubbing. "Scrubbing too hard can scratch interior surfaces, damaging the microwave," says Conn.

Common Microwave-Cleaning Mistakes to Avoid

Perhaps the most common mistake people make is not cleaning spills quickly enough. “Left behind food particles not only become caked over time, but can also absorb the microwave’s energy and create burn spots that can damage the interior,” warns Silva-Nash. “To avoid this, address spills right away by cleaning them with warm water and dish soap. If the spill is stubborn, try heating up a bowl of water to soften the spots, then wipe.”

"Don’t forget to detail corners, edges, and hidden spots that grease tends to accumulate in," adds Conn. And remember to rinse or dry after cleaning, as forgetting this step can lead to unwanted odors and even create mold over time.

4 Foolproof Ways to Clean a Greasy Microwave, According to Pros