Flextail
FLEXTAIL Max Repeller S
Spatial Device · Device; not EPA-registered
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Pros
- Meaningful landing/bite reduction (45–75%)
- Protects a real zone (about 15 ft in still air)
Cons
- Protects only the treated zone, and effectiveness drops sharply in wind or open air
- Highly toxic to fish and aquatic life, so keep it well away from water
- Pyrethroid vapor, so keep cats away and never run it in an enclosed space
- Active ingredient concentration is not disclosed
The full review
Flextail's power-bank-focused repeller: the same heated-mat mosquito emanator built around a large 9600 mAh battery that also charges a phone in a pinch. A USB-C rechargeable battery heats a replaceable pad carrying prallethrin and meperfluthrin, releasing a vapor meant to hold a repellent zone in still air, and its bigger cell delivers much longer runtime than the Tiny units. There is no camping lantern here, the trade for the larger battery and a tougher weather rating. For mosquitoes it performs like the rest of the line, a modest close-range bubble in calm air that thins in any breeze. The pesticide pads ship separately and the device carries no EPA registration number.
Scorecard
Expand any pillar to see exactly why it scored what it did.
Effectiveness45%56This is an area device, not applied to skin: published field trials report roughly 40–65% fewer mosquito landings or bites, over about a 15 ft zone. Scored 60% on that reduction and 40% on how much space it protects, so a larger zone counts for real. Reduction figures come from controlled or semi-field trials, not backyard conditions. Real-world protection drops sharply in wind and open air, so this is scored with lower confidence.
This is an area device, not applied to skin: published field trials report roughly 40–65% fewer mosquito landings or bites, over about a 15 ft zone. Scored 60% on that reduction and 40% on how much space it protects, so a larger zone counts for real. Reduction figures come from controlled or semi-field trials, not backyard conditions. Real-world protection drops sharply in wind and open air, so this is scored with lower confidence.
Evidence & honest claims25%49Prallethrin is well-supported by published evidence, weighted by how close its concentration is to the studied effective dose (base 43). Of 3 marketing claims audited: 1 strong, 2 moderate, 0 weak, 0 unsupported (+6).
Prallethrin is well-supported by published evidence, weighted by how close its concentration is to the studied effective dose (base 43). Of 3 marketing claims audited: 1 strong, 2 moderate, 0 weak, 0 unsupported (+6).
Safety15%60This is an area device, not applied to skin, so dermal risk does not apply. Scored on moderate inhalation risk from the vapor (−18); high toxicity to fish and aquatic life (−22). Use it outdoors in the open air only, keep cats away. Keep it well away from ponds, aquariums, and water features.
This is an area device, not applied to skin, so dermal risk does not apply. Scored on moderate inhalation risk from the vapor (−18); high toxicity to fish and aquatic life (−22). Use it outdoors in the open air only, keep cats away. Keep it well away from ponds, aquariums, and water features.
Transparency15%50This product names its active ingredient (+30); discloses 0% of its active strengths (+0); publishes a concrete coverage figure (+20).
This product names its active ingredient (+30); discloses 0% of its active strengths (+0); publishes a concrete coverage figure (+20).
Every pillar is scored from published rules. Read how we score.
Coverage & effectiveness
This is an area device: it protects a zone around it rather than your skin. Effectiveness is the published reduction in mosquito landings or bites. Real-world protection is best in still air and drops in wind or open space.
Mosquitoes
EstimatedModerate- Protected zone
- ~15 ft zone
- Fewer bites
- 40–65%
The band is an estimate for the device used close to you in still air. It uses the same prallethrin and meperfluthrin mats as the rest of the Flextail line, so a real close-range zone in calm conditions is plausible, held to moderate confidence because the blend in a portable unit has not been independently field-tested that we could find and the marketed 30 foot zone is a best-case number. Effective range collapses in any breeze, so treat it as a modest bubble around the device. The oversized battery buys runtime and a power-bank feature, not more coverage.
Ingredient disclosure
This product names its active ingredient (+30); discloses 0% of its active strengths (+0); publishes a concrete coverage figure (+20).
Only active ingredients are disclosed. The full ingredient list (inerts/carriers) is not published, so this may not be the complete formula.
Active ingredient concentrations are not published for this product.
- PrallethrinActive
Active repellent · concentration not disclosed
- MeperfluthrinActive
Active repellent · concentration not disclosed
Claims audit
What the marketing says, versus what the evidence supports.
“Up to 19 hours of runtime per charge”
DurationModerateManufacturer figure for the cooler Camp mode and its smallest zone; higher-output mode runs shorter.
“Doubles as a power bank to charge your phone”
OtherStrongA genuine utility feature of the 9600 mAh cell, separate from repellency.
“IP65 water-resistant with double-sided heating”
OtherModerateA durability and heating-design spec, not a measure of repellency.
Safe around dogs & cats?
Worst case from this product’s active ingredients. Do not apply this or any human repellent to your pet.
Mainly from Prallethrin.
Not veterinary advice. Full guide to repellents around pets →