The best bug sprays for Florida contain either DEET (20% to 30%) or picaridin (20%), both of which protect against the state’s two most relentless biters: mosquitoes and no-see-ums. Florida’s year-round warm climate, standing water, and coastal marshes create ideal breeding grounds for these insects, so a repellent that works for a couple of hours in a cooler state may barely last one here. Choosing the right active ingredient and concentration matters more than brand name.
Active Ingredients That Actually Work
The CDC recommends four EPA-registered active ingredients for insect repellents: DEET, picaridin, IR3535, and oil of lemon eucalyptus (OLE). All four repel mosquitoes, but they differ in how long they last and what else they cover.
DEET (20% to 30%) remains the most widely tested repellent on the market. Products with 20% or higher concentrations provide several hours of protection. Anything above 50% DEET doesn’t add extra benefit, so there’s no reason to reach for maximum-strength formulas. DEET also works well against biting midges (no-see-ums), black flies, and fleas, making it a strong all-around choice for Florida’s varied pest population.
Picaridin (20%) is the closest competitor to DEET in both duration and breadth. It repels mosquitoes, no-see-ums, and chiggers effectively. Many people prefer it because it doesn’t have DEET’s greasy feel or strong odor, and it won’t damage synthetic fabrics or plastics the way DEET can. For anyone spending time near Florida’s coastal mangroves or Everglades marshes, where no-see-ums are especially fierce, picaridin at 20% is an excellent pick.
Oil of lemon eucalyptus (OLE/PMD) is the plant-derived option with real data behind it. It provides protection comparable to 15% to 20% DEET against U.S. mosquito species. That’s decent, but it falls short of the higher-concentration DEET and picaridin products you’ll want for long outdoor stretches in Florida. One important distinction: oil of lemon eucalyptus (the refined active ingredient PMD) is not the same thing as natural lemon eucalyptus essential oil, which has not been tested or approved as an effective repellent.
IR3535 shows up in some European-developed formulas and offers moderate mosquito protection. It’s less commonly found on U.S. shelves and has a thinner track record against no-see-ums specifically.
Why Concentration Matters More Than Brand
Products with less than 10% of any active ingredient typically protect for only one to two hours. In Florida, where you might be outdoors from sunrise fishing to a late backyard cookout, that means constant reapplication. A 25% to 30% DEET spray or a 20% picaridin formula will keep you covered for significantly longer per application, reducing the hassle and the gaps in protection when you forget to reapply.
The sweet spot for most adults in Florida is 25% to 30% DEET or 20% picaridin. You get long-lasting protection without exceeding the concentrations that health agencies recommend, especially for families with children.
No-See-Ums Need Special Attention
Florida’s biting midges, commonly called no-see-ums or sand gnats, are a different challenge from mosquitoes. They’re tiny enough to pass through standard window screens and tend to swarm at dawn and dusk near beaches, marshes, and mangrove areas. Not every repellent that stops mosquitoes will stop no-see-ums.
Both DEET and picaridin have documented effectiveness against biting midges. OLE products with PMD also list no-see-ums on some labels, though typically at lower concentrations (8% to 10% PMD) that won’t last as long. If no-see-ums are your primary concern, a 20%+ DEET or picaridin product applied to all exposed skin is your most reliable defense. Wearing long sleeves and pants during peak biting hours helps too, since these insects target any sliver of bare skin.
Natural Repellents and Their Limits
Plant-oil blends containing citronella, peppermint, geranium, lavender, or tea tree oil are widely available in Florida health food stores and farmer’s markets. Testing shows these mixtures repel mosquitoes for roughly two hours at best. That’s not enough for a state where mosquito activity can stretch from early morning to well past sunset, especially during the wet season from June through October.
Citronella candles, a backyard staple, offer even less. Studies consistently show they have little measurable effect on mosquito behavior in open-air settings. If you prefer a plant-based repellent, oil of lemon eucalyptus (PMD) is the only botanical option with strong enough evidence to earn a CDC recommendation, though it still won’t match higher-concentration DEET or picaridin for duration.
Permethrin for Clothing and Gear
Spraying your clothes with permethrin adds a second layer of protection that works especially well in Florida’s buggy backcountry. Permethrin is an insecticide, not a repellent, so it kills insects on contact rather than just keeping them away. It binds tightly to fabric fibers and holds up through multiple washes.
Apply permethrin to shirts, pants, socks, and hats outdoors in a ventilated area, then hang them to dry completely before wearing. Never apply it directly to skin or spray it on clothing while you’re wearing it. The combination of permethrin-treated clothing and a skin-applied repellent like DEET or picaridin is the gold standard for anyone hiking, camping, or fishing in areas with heavy mosquito and tick pressure, such as the Ocala National Forest or Big Cypress Preserve.
Dealing With Florida’s Heat and Humidity
Florida’s subtropical climate means you’ll sweat through repellent faster than someone using the same product in New England. Heavy perspiration and getting wet can dilute or wash away active ingredients, shortening the effective window of any spray. Higher concentrations help here because they start with a larger reservoir of active ingredient on your skin.
A practical approach: if you stop getting bitten, you don’t need to reapply yet. But the moment you notice new bites or see mosquitoes landing, it’s time for another application. After swimming or toweling off, reapply regardless of how recently you last sprayed. Lotions and pump sprays tend to stay on skin better than aerosols in humid conditions, and they also reduce the risk of inhaling the product.
Using Bug Spray With Sunscreen
In Florida, you’ll almost always need both sunscreen and insect repellent. The correct order is sunscreen first, repellent second. Apply sunscreen generously to all exposed skin about 30 minutes before heading outside, then layer the repellent on top. Putting repellent under sunscreen traps it against your skin and reduces its effectiveness.
Combination sunscreen-repellent products seem convenient, but they create a timing problem. Sunscreen needs reapplication every two hours (more often if you’re swimming or sweating), while repellent doesn’t. Reapplying a combo product on a sunscreen schedule means you’re piling on more repellent than necessary. A better strategy is to start with the combo if you have one, then reapply with a sunscreen-only product every two hours.
What’s Safe for Kids
Children in Florida face the same mosquito exposure as adults, but the rules for repellent use are tighter. The maximum recommended DEET concentration for children is 30%, and DEET products should not be used on infants younger than two months. For babies that young, physical barriers like mosquito netting over strollers and carriers are the safest option.
Oil of lemon eucalyptus and PMD products should not be used on children under three years old due to insufficient safety testing in that age group. Picaridin has no specific age restriction from the CDC, making it a practical choice for young kids who need reliable protection. Lotions or pump sprays are preferable to aerosols for children, and adults should apply the product to their own hands first, then rub it onto the child’s skin, avoiding the eyes and mouth.