by Andrey Zhilin, mold prevention specialist
Florida’s lush landscapes and ocean breezes come with a downside: humidity levels that rarely dip below 70%. While great for tropical plants, this constant moisture is a breeding ground for one of the biggest threats to your home’s health — mold.

As someone who has helped dozens of Florida homeowners fight mold outbreaks, I can assure you: regular cleaning isn’t enough. You need targeted strategies that focus on prevention, not just removal.
Here are my most effective, field-tested tips to keep mold out of your home — even in the muggiest months.
1. Understand Where Mold Thrives
Mold doesn’t need a flood to appear. All it takes is:
- Humidity above 60%
- Organic material (like wood, paper, or fabric)
- Poor airflow
That’s why it’s commonly found in:
- Bathrooms and under sinks
- HVAC systems and ductwork
- Window sills and sliding door tracks
- Closets, laundry areas, and behind furniture against exterior walls
2. Keep Humidity Under Control
This is your first line of defense:
- Use dehumidifiers — especially in bedrooms and basements
- Run your AC consistently, even when you’re away
- Keep indoor humidity below 55%
- Check for condensation on windows and pipes — a red flag for poor ventilation
3. Focus on High-Risk Surfaces
Some materials hold moisture longer:
- Clean and seal grout lines in bathrooms
- Avoid wall-to-wall carpets in humid zones
- Wipe shower walls and tiles dry after each use
- Use mold-resistant paint in bathrooms and laundry rooms
4. Ventilate Every Room
Poor airflow traps moisture. Ensure:
- Exhaust fans run for at least 20 minutes after a shower
- Closets have air gaps beneath doors
- Furniture isn’t flush against exterior walls
- Ceiling fans are used to circulate air daily
5. Clean With Anti-Mold Agents
Regular cleaners won’t cut it. Use:
- White vinegar for non-porous surfaces (kills 80% of mold species)
- Hydrogen peroxide for sinks, toilets, and tiles
- Baking soda + water paste for stubborn areas
- EPA-approved mold removers for high-risk zones
And yes, bleach works — but only on non-porous surfaces. It doesn’t penetrate drywall or wood and may just lighten mold without killing it.
6. Don’t Forget “Hidden Zones”
Mold often grows where you don’t look:
- Inside the washing machine gasket
- Behind the fridge and under the dishwasher
- Inside AC drip pans and filters
- In storage bins in garages or sheds
Schedule deep cleaning for these spots every 30–60 days, especially in summer.
7. Be Proactive After Rainstorms
Florida’s rainy season isn’t forgiving. After heavy rain:
- Inspect roof and window seals
- Dry entry mats and curtains
- Open windows briefly for cross-ventilation — once the humidity outside drops
- Run dehumidifiers to help your HVAC system catch up
Final Note from Andrey: Mold Is a Maintenance Issue — Not Just a Disaster Issue
Many homeowners treat mold like it only happens after a leak or flood. But in Florida, it’s a daily threat, and prevention should be part of your weekly cleaning rhythm.
At Sharky, we offer mold-conscious cleaning services, using products and protocols designed for Florida’s unique climate — whether it’s a condo in Miami or a beach house in Destin.
Read also: Post-Hurricane Cleaning Checklist for Florida Homeowners