Central Florida's mosquito season runs essentially 12 months — there's no true winter reprieve here. The wet season (June–October) brings the worst pressure, but even in January you'll encounter active mosquitoes on warm evenings. After treating thousands of Orlando yards over 19 years, I've identified the five changes that produce the most dramatic improvement. Some are free; one is a professional service.
1. Eliminate Standing Water (The #1 Most Important Step)
Mosquitoes need only a bottle cap's worth of water to breed. A single breeding site in a backyard can produce thousands of mosquitoes per week. The most effective thing any Orlando homeowner can do is a weekly inspection specifically for standing water:
- Empty and scrub bird baths weekly (mosquito eggs stick to surfaces — scrubbing is required)
- Tip out plant saucers after every rain event
- Check gutters — clogged gutters are major breeding sites
- Cover or remove any containers that hold water (old pots, tarps, buckets)
- Treat or aerate decorative ponds — a running fountain doesn't breed; a still pond does
2. Treat the Shrubbery — That's Where They Rest
Mosquitoes rest in cool, dark, humid spots during the day — primarily the undersides of leaves in dense shrubs, particularly along fence lines and property borders. Treating these resting areas with a pyrethrin-based barrier spray is what professional mosquito control services do. The active ingredient breaks down quickly and doesn't persist in the environment, but applied to resting sites it kills mosquitoes for 3–4 weeks per treatment cycle.
3. Add a Fan to Your Outdoor Spaces
Mosquitoes are weak fliers — they can't maneuver effectively in winds over 1 mph. A large oscillating fan aimed at your patio seating area creates a wind barrier that's surprisingly effective. This won't eliminate them from the yard, but it protects the specific area where you're spending time at minimal cost.
4. Larvicide Low-Drainage Areas
Some standing water is hard to eliminate — low-lying areas of your lawn that hold water after rain, ornamental ponds, drainage swales. Bacillus thuringiensis israelensis (Bti) is a naturally occurring bacteria available in "mosquito dunks" (donut-shaped tablets) that kills mosquito larvae without harming other wildlife, pets, or humans. Drop one in any persistent standing water and it treats for 30 days. This is safe, effective, and widely available at hardware stores.
5. Professional Barrier Spray Program
For properties with significant vegetation, the five steps above dramatically reduce the mosquito population but rarely eliminate it. A professional monthly barrier spray program treats all resting and breeding habitat with EPA-registered products, achieving 85–90% reduction in mosquito activity. Shield offers monthly service throughout the Orlando metro — the most effective solution for families who want to actually use their outdoor spaces during peak season.