Mold around and inside the kitchen sink isn’t just a cosmetic issue – it can be a sign of excessive moisture, poor hygiene, or even hidden leaks. Besides affecting the appearance of your kitchen, mold can cause serious health problems and damage kitchen surfaces.

In this article, we'll cover:

• What causes mold in the sink
• How to prevent it effectively
• The most efficient methods for removal
• When it's time to call in professionals

What Causes Mold in the Kitchen Sink?

Mold is a type of fungus that spreads through spores and thrives in environments with:

• Constant moisture
• Poor ventilation
• Food and grease residues
• Organic materials (like wooden countertops or dirty sponges).

Common mold hotspots:

• Silicone sealants around the sink
• Inside the drain trap
• Under the sink (especially if there’s a leak)
• Faucet joints and areas around the faucet base.

How to Prevent Mold Formation

1. Keep the Sink Dry

After washing dishes, dry the sink and the surrounding area with a soft cloth, including: the sink basin, the faucet area, the adjacent countertop.

Tip: Use microfiber cloths – they absorb moisture better and leave no streaks.

2. Clean the Drain Regularly

The drain trap (P-trap) often retains food particles and grease, creating an ideal environment for mold and unpleasant odors.

How to clean it:

Pour ½ cup of baking soda down the drain. Add 1 cup of white vinegar – it will fizz. Wait 10–15 minutes. Rinse with hot water. Repeat this process every 2 weeks.

3. Improve Kitchen Ventilation

• Open a window while cooking or doing dishes
• Install a powerful extractor fan
• Avoid leaving wet dishes to dry directly over sink edges or sealant areas.

4. Pay Attention to Seals and Caulking

Silicone seals around the sink often retain moisture and are difficult to clean once mold takes hold.

Prevention tip: Spray with an antibacterial solution or white vinegar once a week. If the seal is cracked, discolored, or permanently stained – replace it.

How to Remove Mold That’s Already There

If mold is already visible, don’t delay. The longer it stays, the deeper it can penetrate porous materials and become harder to remove.

 1. White Vinegar

Spray undiluted vinegar directly onto the moldy area. Let it sit for 1 hour. Scrub with a stiff brush and rinse. Vinegar kills up to 80% of known mold species and is safe for most surfaces.

 2. Baking Soda Paste

Mix baking soda with a small amount of water to make a paste. Apply to the moldy area and let it sit for 15 minutes. Scrub and rinse. Baking soda not only cleans, but also neutralizes odors.

 3. Hydrogen Peroxide (3%)

Ideal for stubborn mold. Spray a 3% solution directly onto the mold. Let it sit for 10 minutes. Scrub and wipe dry.

Important: Do not use on natural stone or painted surfaces – it may cause bleaching. Always test on a small, hidden spot first.

When to Call a Professional

Seek professional help if:

• Mold keeps returning shortly after cleaning
• There’s moisture or dampness under the sink or inside the cabinet
• Wood surfaces are swollen or warped, or there's a persistent musty smell
• Seals are blackened and won’t clean off
• Hidden leaks or deep mold growth can cause structural damage and may require repair.

Extra Tips for a Hygienic Kitchen

• Replace dish sponges weekly – they’re a breeding ground for bacteria.
• Clean exhaust hood filters and dishwasher traps – at least once a month.
• Avoid wooden trays or cutting boards around the sink – they retain moisture.
• Consider a dehumidifier – especially if your kitchen has no windows.

Conclusion

Keeping your kitchen clean, dry, and well-ventilated not only protects it from mold, but also creates a healthier environment for cooking and eating. Regular cleaning, timely maintenance, and the right habits are your best defense against mold in the sink.

With just a bit of care and consistency, your kitchen can be not only cozy, but safe and mold-free for your entire household.