Head-to-head · Best Mosquito Traps

Flowtron BK-15D Electronic Insect Killer vs Mosquito Magnet Patriot Plus MM4200B

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

Flowtron BK-15D Electronic Insect Killer and Mosquito Magnet Patriot Plus MM4200B score essentially the same (4.2 vs 4.2). Pick the one whose trade-offs match your priorities — the strengths and watch-outs below are where they actually differ.

Ranked #4 in Best Mosquito Traps

Flowtron BK-15D Electronic Insect Killer

4.2

$60

The Flowtron BK-15D is the volume-leader in the budget bug zapper class and the cheapest 'real' attractant trap in this lineup, with a 5,600-volt grid, included octenol cartridge, and a 2-year warranty. The honest case against it is the same case against every UV bug zapper: independent entomology research has repeatedly shown that under 10% of the catch is actually biting insects. The other 90%+ is moths, beetles, and beneficial pollinators. If you want a $60 noisemaker for a barn or workshop, it earns its keep. If your goal is mosquito reduction specifically, the DT2000XLPSR is the smarter $99.

Strengths

— 5,600-volt non-clogging grid is the strongest in the budget zapper class
— Half-acre coverage with included 100-hour octenol attractant cartridge for the first season
— Built-in 2-year warranty (longer than DynaTrap, Katchy, or any Thermacell)

Watch-outs

— University of Notre Dame and Delaware research found only 4.1-6.4% of zapper catches are actually mosquitoes the rest are beneficial moths, beetles, and parasitoid wasps
— Audible snap with every kill, which is the entire opposite of 'quiet patio operation'
— UV bulb commonly fails before the 1-year mark and replacement bulbs run ~$20

$60 · Check Price on Amazon Full review →

Ranked #3 in Best Mosquito Traps

Mosquito Magnet Patriot Plus MM4200B

4.2

$506

The Patriot Plus is the only consumer trap that uses real CO2 (from propane combustion) rather than a chemistry-mimicked surface, and that is why it kills meaningfully more biting insects than the DynaTrap in serious-infestation yards. Today's Homeowner and MosquitoReviews both report measurable population drops in 7-14 days and a steady-state reduction over the season. The price is the wedge $506 MSRP plus $25-30/month in propane and octenol refills is what keeps it niche but for a 1-acre lot in Florida or coastal South, it is the only trap that consistently delivers. Multi-season reliability is the recurring concern.

Strengths

— Real CO2 emission (from propane combustion) catches 10x more mosquitoes per night than UV-only traps in heavy-infestation yards
— 1-acre coverage with a 50-foot AC power cord allows positioning away from outlets
— Silent operation no fan whir, no zap, no light pollution at night

Watch-outs

— Propane tank ($15-20) plus octenol cartridge (~$12) every 21 days, roughly $25-30/month in refills
— Reliability issues commonly reported after 1-2 seasons in Home Depot and Today's Homeowner reviews
— $500+ upfront price puts it well above every other option in this lineup

$506 · Check Price on Amazon Full review →

How they stack up

Flowtron BK-15D Electronic Insect Killer

The cheapest real attractant trap in the lineup and the only one with an audible electric grid the DynaTrap DT2000XLPSR and Mosquito Magnet Patriot Plus both kill silently. Has the worst pollinator-impact profile here, with independent research showing under 10% of the catch is mosquitoes versus the more selective Mosquito Magnet. The Katchy is similarly UV-attractant-based but indoor-only and zap-free.

Mosquito Magnet Patriot Plus MM4200B

Catches roughly 10x more mosquitoes per night than the DynaTrap DT2000XLPSR in heavy-infestation yards because it emits actual CO2 from propane combustion rather than just titanium-dioxide mimicry. More expensive upfront and ongoing than every other option here, but the only one that targets breeding females specifically. Slower than the Thermacell E90 to deliver protection for an evening but unlike the E90, it actually reduces the population over weeks of operation.

Specs side-by-side

Spec	Flowtron BK-15D Electronic Insect Killer	Mosquito Magnet Patriot Plus MM4200B
Coverage Area	1/2 acre	1 acre
Trap Type	15W UV bulb + octenol attractant + 5,600V electric grid	Propane combustion CO2 + octenol attractant + vacuum fan
Power Source	AC corded	AC corded (50 ft cord) + 20 lb propane tank
Bulb Type	15W BF-35 UV replacement bulb	—
Grid Voltage	5,600V (vs ~4,200V competitor standard)	—
Attractant Refill Required	Octenol attractant strip every 30 days (~$8)	Octenol cartridge + 20 lb propane every 21 days (~$25-30/month)
Weight	4.1 lbs	—
Dimensions	8.5" L x 8.5" W x 11.8" H	—
Warranty	2-year limited	1-year limited
Catch Bag Capacity	—	3x larger than original Patriot
Targets	—	Mosquitoes, black flies, midges, no-see-ums
Operating Noise	—	Silent (no fan whine, no zapper)

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