Verdict
All guidesResearchMethodologyAboutContact
Head-to-head · Best Bug Zappers

Flowtron FC4700 Indoor Bug Zapper vs Katchy Indoor Insect Trap

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

Verdict is reader-supported. As an Amazon Associate we earn from qualifying purchases. Some links on this page are affiliate links — if you click through and buy, we may earn a small commission at no extra cost to you. Our ratings are sourced from independent publications, not sponsors.
The short answer

Katchy Indoor Insect Trap comes out ahead by a clear margin (3.8 vs 4.3). The gap is mostly about budget-conscious indoor pest controllers — read the strengths below before deciding.

Flowtron FC4700 Indoor Bug Zapper
Ranked #5 in Best Bug Zappers
Flowtron FC4700 Indoor Bug Zapper
3 sourcesall derived$180as of Aug 1

Indoor fly control across 1200 sq. ft. is what the Flowtron FC4700 Indoor Bug Zapper is built for. Reviewers noted the low-voltage grid stuns insects and directs them onto a replaceable adhesive board. A fly lure is included and the unit is described as silent in operation. Some users found the hidden adhesive board difficult to access. It works for indoor fly management, isn't suitable outdoors, and doesn't guarantee results against insects other than flies. Indoor spaces where flies are the problem are the fit; commercial or outdoor applications are not.

Strengths
  • — 1200 sq. ft. killing radius suitable for medium indoor spaces
  • — Low-voltage grid stuns insects and directs them onto replaceable adhesive board
  • — Easy bulb replacement and includes fly lure for enhanced attraction
Watch-outs
  • — No escape adhesive board is hidden and may be difficult to access
  • — Limited to indoor use only, not suitable for outdoor applications
  • — Does not specify if it's effective against all insect types beyond flies
$180 · Buy at pyramydair.comFull review →
Katchy Indoor Insect Trap
Higher ratedRanked #3 in Best Bug Zappers
Katchy Indoor Insect Trap
4 sources2 derived$44.99as of Aug 1

UV light and fan suction make the Katchy Indoor Insect Trap a non-toxic, child-safe way to handle flying pests like fruit flies, gnats, and mosquitoes. Reviewers say it performs best at night with the lights off, when its UV is the brightest source in the room. The manual model is simple but needs your attention; the automatic version switches on when it detects darkness. The newer Katchy Duo adds a scented bait pod for daytime effectiveness, though information on replacing the bait is thin. Small insects are its range, and large house flies get past it. Good for indoor pest control, not a complete answer to a severe infestation.

Strengths
  • — Uses UV light to attract insects and fan suction for effective trapping
  • — Child-safe and non-toxic with no insecticides or toxic substances
  • — Compact design at 5.5 inches wide and 9 inches tall, weighing only 1.4 pounds
Watch-outs
  • — Does not trap large house flies or other large insects
  • — Manual models require user to remember to turn on/off or leave on all day
  • — Sticky paper needs regular replacement and can be messy to handle
$44.99 · Check Price on AmazonFull review →

Derived means the reviewer published no score, so one was inferred from their written verdict. Everything else is a number the publisher printed. How we rank.

How they stack up

Flowtron FC4700 Indoor Bug Zapper

The Flowtron FC4700 provides 1200 sq. ft. coverage with silent low-voltage stunning, which is more effective than the Katchy trap's UV light and fan suction. Unlike the Aspectek zapper, it uses a low-voltage grid that's safer for homes with children and pets. However, the FC4700's hidden adhesive board makes it less user-friendly than the Zevo trap's easy cartridge replacement system.

Katchy Indoor Insect Trap

Unlike the DynaTrap models which suffer from frequent build quality issues and fan failures, the Katchy Indoor Insect Trap offers a simpler, more reliable design with UV light and fan suction. While the DynaTrap DT3007W provides 24/7 LED trapping, the Katchy is more effective against smaller insects like fruit flies and gnats but lacks the power to tackle large house flies that the Flowtron FC4700 can handle. The Katchy's manual operation is a drawback compared to the automatic DynaTrap models, but it's more child-safe than the Aspectek zapper.

Specs side-by-side

SpecFlowtron FC4700 Indoor Bug ZapperKatchy Indoor Insect Trap
Coverage Area1200 sq, ft.Up to 1,500 sq ft
Power SourceElectric (120V)Requires AC plug-in
Capture MethodElectric GridReplaceable glue boards included
Light TypeUV FluorescentUV light for insect attraction
Dimensions14.5 x 14.5 x 10.5 inches5.5" x 9"
Weight4.5 lb1.4 lb
Target SpeciesFlying InsectsFlying insects
Noise LevelSilentSilent
Material—Paper
← See the full ranking of best bug zappers