Silicone is easy to clean — if you use the right method. Whether it’s a greasy baking mat, a moldy shower caulk, or a discolored phone case, different types of silicone require different cleaning techniques. Basic dish soap works for everyday grime, but stubborn stains and odors need deeper cleaning.
In this guide, we’ll break down the best ways to clean silicone, from quick rinses to heavy-duty stain removal. You’ll learn how to safely clean silicone kitchenware, caulking, and other household items, keeping them looking new and working well.
Understanding Silicone and Its Cleaning Challenges
Silicone is durable and nonstick, but over time, it absorbs grease and oil, making it look dirty and feel sticky. Regular cleaning prevents buildup and keeps it working properly. In kitchens and bathrooms, silicone is constantly exposed to moisture, food, and temperature changes, which can lead to stains and mold. A good cleaning routine helps keep silicone items in top shape.
Essential Supplies for Cleaning Silicone
You don’t need special cleaners for silicone — just basic household items:
- Dish soap and warm water (for everyday cleaning)
- Baking soda (for scrubbing stains)
- White vinegar (for disinfecting and removing residue)
- Hydrogen peroxide (for tough discoloration)
- A soft sponge or old toothbrush (for scrubbing)
- Rubber gloves (to protect your hands)
How To Clean Silicone Kitchenware
Silicone kitchenware — like spatulas, baking mats, and molds — can trap grease and food residue. Here’s how to keep them clean:
Everyday Cleaning
- Soak in warm, soapy water for 15 minutes.
- Scrub with a sponge or cloth.
- Rinse and let air dry.
Removing Stains and Odors
- Make a baking soda paste (baking soda + water).
- Apply it to stained areas and let sit for 20 minutes.
- Scrub with an old toothbrush.
- Rinse and dry completely.
Removing Tough Stains and Odors
For stubborn stains or lingering odors:
- Create a paste with baking soda and water.
- Apply the paste to stained areas.
- Let sit for 15 to 20 minutes.
- Scrub gently with an old toothbrush.
- Rinse thoroughly and dry.
How To Clean Silicone Bakeware
Silicone bakeware absorbs grease over time, making it harder to clean with regular washing. To deep clean, start by heating your oven to 350°F and placing the bakeware on a baking sheet for about 10 minutes. Once heated, transfer it to the sink and sprinkle baking soda over the surface. Let it cool before scrubbing with a sponge, then rinse thoroughly and dry. To prevent buildup, avoid using cooking sprays, which can leave a sticky residue on silicone.
How To Clean Silicone Caulking
Due to constant moisture, bathroom and kitchen caulking often develops mold and mildew. To clean it, spray a mix of white vinegar and water onto the caulk and let it sit for 30 minutes before scrubbing with a toothbrush. If mold persists, apply a baking soda paste and let it sit for an hour before scrubbing and rinsing. Baking soda’s mild abrasiveness helps lift stubborn stains while also killing mold.
Removing Silicone Caulking
You should remove old, damaged caulking before reapplying a fresh seal. Use a hairdryer to soften the caulk, then cut along the edges with a utility knife. Peel it away and scrape off any remaining residue with a putty knife. Once the surface is clean and dry, it’s ready for new caulk.
Cleaning Silicone Phone Cases
Silicone phone cases trap dirt, oils, and bacteria over time. To clean one, remove it from the phone and scrub it with warm, soapy water using a soft cloth or toothbrush, making sure to reach crevices. Rinse thoroughly and let it dry completely before putting it back on. For disinfecting, swap soap for a mix of white vinegar and water to eliminate bacteria and odors.
Tackling Discoloration in Silicone
Silicone can stain over time, especially from foods like tomato sauce and turmeric. To remove discoloration, soak the item in hydrogen peroxide for 24 hours, then wash it with warm, soapy water. For extra cleaning power, run it through the dishwasher before using it again.
Removing White Residue from Silicone
A white, chalky residue on silicone is usually caused by mineral buildup from hard water or soap scum. To remove it, soak the item in a mix of white vinegar and water for 30 minutes, then scrub gently with a soft brush. Rinse thoroughly and let it dry. If you have hard water, using distilled water for cleaning can help prevent future buildup.
When To Replace Silicone Items
Silicone lasts a long time, but eventually, it wears out. If an item has cracks, stubborn odors, a sticky texture, or discoloration that won’t come out, it’s time to replace it. Worn-out silicone can lose its nonstick properties and may not be safe for food use.
