When peak summer hits, high humidity does more than just make the outdoor air feel heavy—it completely changes the environment inside your home. Typically, anything above 50% humidity traps moisture in fabrics, stagnant air pockets, and drains. This dampness holds onto airborne particles, creating a distinct, musty, and sticky odor that can make even a clean house feel stale.
Air fresheners only mask the issue. To keep your home smelling good even when it’s too hot out, you need to target the moisture and whatever is fueling the smell. Here are five practical, high-impact ways to fix musty smells at home during summer.
1. Deep Clean Your Kitchen Garbage Disposal
Your garbage disposal can be a primary source of gross odors. In high heat, organic food residue trapped on the underside of the splash guard and along the grinding blades decomposes rapidly. To break down built-up gunk, follow these easy cleaning steps:
- Pour half a cup of baking soda down the drain, followed by a cup of white vinegar.
- Let it fizz for ten minutes to loosen the grime.
- Flush the drain with boiling water, then drop in two cups of ice cubes and a handful of coarse salt.
- Run the disposal with cold water. The ice and salt mechanically scrub the blades where food particles stick.
- Finish by grinding a few citrus peels to leave a clean, natural scent.
2. Refresh Musty Closets with DIY Baking Soda Sachets
Closets are hotbeds for damp odors because of a lack of air circulation, especially in the summer when the air conditioning is on for longer hours. When humid air gets trapped behind closed doors, natural fibers like cotton and wool absorb the moisture, resulting in a stale, musty smell.
Neutralize funky odors and prevent them from sticking to your clothes with a do-it-yourself deodorizer using simple household items. Here’s how:
- Fill small breathable mesh or organza bags with half a cup of baking soda.
- Add two tablespoons of uncooked rice to the mixture. Rice acts as a natural desiccant, pulling moisture out of the air so the baking soda can efficiently neutralize odors.
- Toss in a few drops of antimicrobial essential oils, like tea tree or eucalyptus.
Hang these sachets between your clothes or place them in shoe racks. Replace them every three to four weeks as they saturate.
3. Ban Mildew on Bath Mats with Proper Drying Technique
A damp bathmat sitting on a bathroom floor in 60% humidity will start growing mildew within 24 hours. Leaving it flat on the floor prevents air from reaching the underside, trapping water against the tile. Here’s how to break this cycle:
- Lift the mat immediately after the final shower of the day.
- Do not just drape it over the side of the tub; hang it over a dedicated towel bar or a drying rack where air can circulate freely across both sides.
- Wash your bathmats weekly in hot water with a cup of white vinegar instead of fabric softener. Fabric softener leaves a chemical coating that reduces absorbency and seals in bacteria.
4. Purify the Air with Bamboo Charcoal
When the air feels heavy and sticky, charcoal is an excellent passive defense. According to a study, activated bamboo charcoal contains millions of microscopic pores that trap both moisture and odor molecules through a process called adsorption.
Place porous charcoal bags near problematic, low-circulation zones like entryway shoe storage, under the kitchen sink, or behind the living room sofa. Unlike synthetic air fresheners, they do not add chemicals to the air. To maintain them, place the bags in direct sunlight for one hour once a month; the UV rays release the trapped moisture and gases, resetting the charcoal for reuse.
5. Clear Out Your Washing Machine Gasket
Front-loading washing machines are notorious for holding water in the rubber door gasket. In the summer heat, this stagnant water quickly turns into a breeding ground for mold, which transfers a sour smell to your laundry.
How to prevent this from happening?
- After every cycle, wipe down the inside of the rubber fold with a microfiber cloth.
- More importantly, leave the washing machine door slightly ajar when not in use to allow the drum to dry completely.
- Once a month, run an empty hot cycle with a specialized washing machine cleaner or two cups of distilled white vinegar or bleach to sanitize the internal plumbing lines.
6. Purge Your Fridge and Neutralize Trapped Odors
Summer humidity turns the lowest points of your refrigerator into a breeding ground for intense, foul odors. Every time you open the fridge door in the summer, warm, moist air rushes in and condenses into liquid droplets on the cold plastic. This extra moisture flows downward, pooling beneath the crisper bins and hydrating invisible food spills—like a sticky drop of meat juice or a smear of decaying vegetable leaves. In this damp, dark, low-oxygen pocket, bacteria and mold multiply rapidly, releasing sharp, sour odors that taint the entire appliance.
To permanently eliminate these hidden scent traps, use this targeted deep-cleaning strategy as recommended by HappyCleans:
- Take out all the contents of your fridge. Toss all expired food items.
- Pull the crisper drawers completely out of the refrigerator. Wash them in the sink separately in warm soapy water.
- Use a microfiber cloth sprayed with a 1:1 solution of warm water and white vinegar to scrub the floor of the fridge cavity, paying special attention to the corners where spilled liquids dry into a sticky film.
- Wipe out the folds of the rubber seal with vinegar, or use a diluted bleach solution (one tablespoon of bleach to one quart of water) if you spot black mold spots.
- Once the physical residue is gone, place an opened, fresh box of baking soda on a middle shelf toward the back. Baking soda acts as a chemical sponge, interacting with airborne acidic odor molecules (like sour milk or aging proteins) and permanently neutralizing them so they can’t circulate through the fridge.
Too Busy to Clean This Summer?
Between work, summer plans, and trying to stay cool, deep-cleaning your home’s hidden odor traps can easily fall to the bottom of your to-do list. Let our professional cleaning technicians take the weight off your shoulders. Whether you need a seasonal deep cleaning or a routine cleaning manage everyday chores, we got you covered! Find your location and get a free quote now!
