If you live in Palm Beach or Broward County, the mosquito season everyone associates with "August alerts" is not close to over. Florida's own health data shows July through September is the highest-risk window of the year for dengue cases (Source: CBS12, Aug 3, 2026), and the case count is still climbing. As of August 20, 2026, seven locally acquired dengue cases have been confirmed statewide this year, five in Hillsborough County and one each in Miami-Dade and Palm Beach (Source: WLRN, Aug 20, 2026). That's up from three locally acquired cases reported just three weeks earlier (Source: WUSF, Aug 3, 2026). Active mosquito-borne illness health alerts currently cover six counties: Alachua, Leon, Palm Beach, Pasco, Hillsborough, and Miami-Dade (Source: WLRN, Aug 20, 2026). Broward is not on that list as of this week.
That last point matters and I want to be precise about it: Broward County does not currently have a state health alert or a confirmed locally acquired case on record. What Broward has is geography, it sits directly between two counties that do have active alerts, and the mosquito that spreads dengue doesn't check county lines.
Why the calendar matters more than the headlines
Most homeowners treat an "alert" as a one-time news event that fades after a few days of coverage. The data says otherwise. Peak risk runs a full three months, and we're only at the midpoint. The yard habits that matter this week matter just as much in mid-September, when school sports and evening walks are still happening outside during the hours Aedes aegypti is most active.
Aedes aegypti, the species behind these dengue cases, isn't a dusk-only biter like people expect from mosquitoes in general. It bites aggressively during the day, and it breeds in tiny amounts of standing water, a clogged gutter, a bottle cap, a saucer under a potted plant. A swamp or retention pond isn't required. A humid week and a neglected corner of the yard is enough.
What actually holds up over a full season, not just one news cycle
- Make water checks part of the weekly routine, not a one-time cleanup. Gutters, pool covers, tarps, kiddie pools, pet bowls, plant saucers. If it holds water for more than a few days, it's a breeding site.
- Watch storm debris. Late summer in South Florida means afternoon storms and downed branches that pool water in ways a tidy yard normally wouldn't. Check after every heavy rain, not just once a month.
- Use an EPA-registered repellent during daytime outdoor activity, not just evenings. DEET, picaridin, oil of lemon eucalyptus, IR3535, or para-menthane-diol are the actives with real evidence behind them. Aedes aegypti's daytime biting pattern is exactly why "just avoid dusk" advice falls short for this particular threat.
- Don't assume "no alert in my county" means no exposure. Broward residents commute into, work in, and visit Palm Beach and Miami-Dade daily. Mosquito exposure doesn't require a case in your own zip code.
Where professional treatment fits into a three-month window, not a one-week scare
Yard maintenance handles what you can see and reach. It doesn't touch mosquitoes coming in from a neighbor's uncut lot, a storm drain, or a canal edge you don't control, over a three-month season, that gap adds up. A barrier treatment knocks down adult mosquitoes on contact and holds up roughly 10 to 17 days, which is why it's scheduled on a recurring cycle rather than applied once. To be clear about the product itself: the barrier spray is not natural, it's an EPA-registered control product that works because it kills mosquitoes on contact. Some programs also use an In2Care-style device alongside it, which is natural-based and works differently, using mosquitoes to carry a larvicide back to breeding sites a spray can't reach. Neither replaces dumping the water in your own yard.
The bottom line
We're not past the risk window, we're in the middle of it. The case count went from three to seven in three weeks, the alert list covers six counties, and Broward's clean status today doesn't mean much when two neighboring counties aren't clean. Treat the next six weeks the way you'd treat the last three: check water weekly, repellent during the day, and get the coverage you can't reach handled on a schedule.
Sources: CBS12, "Disease-carrying mosquitoes detected in Palm Beach County, Miami-Dade," Aug 3, 2026; WUSF, "Locally acquired cases of mosquito-borne dengue reported in Palm Beach, Miami-Dade," Aug 3, 2026; WLRN, "A look at where mosquito health alerts are in effect across Florida," Aug 20, 2026.
Sources are cited inline. Questions about your own property? Call 561-443-3333 or request a free quote.