The Safer Home Indoor Fly Trap (model SH502) holds a 3.9 out of 5 rating across more than 1,160 reviews, with 74% of buyers recommending it. It works well for small insects like fruit flies, gnats, and moths, but results with larger house flies are inconsistent. Here’s what you need to know before buying one.
How the Trap Works
The Safer Home trap is a small plug-in device that uses UV LED light to attract flying insects, then captures them on a replaceable sticky glue card. There are no chemical insecticides, sprays, or zappers involved. You plug it into a standard outlet, slide in a glue card, and leave it running. The manufacturer recommends keeping it on 24/7 for continuous protection.
The UV light is what does the heavy lifting. Flying insects are naturally drawn to it, especially in darker rooms or at night. Once they land on or near the glue card, they’re stuck. The trap operates silently and produces a soft glow that many users describe as doubling as a night light.
What Users Like Most
The most consistent praise across reviews is how easy the trap is to set up. You unbox it, insert a glue card, and plug it in. No assembly, no configuration, no maintenance beyond swapping the card when it fills up. Multiple reviewers highlight how quietly it runs, which makes it a good fit for bedrooms.
For fruit flies and gnats, the trap earns high marks. Users with houseplants (a common source of fungus gnats) report significant reductions in flying insects within days. One reviewer noted that their plants had been attracting fruit flies and the trap “got rid of almost all of them.” Another credited the trap with eliminating mosquito bites during summer nights, saying it “100% works as directed.”
The fact that it uses no chemicals is a genuine selling point for households with kids or pets. There’s nothing toxic to worry about, and the sticky cards are enclosed inside the device rather than left exposed.
Where It Falls Short
The biggest complaint is inconsistency with larger insects. The trap reliably catches small flies, gnats, and moths, but many users report limited success attracting full-sized house flies. If house flies are your main problem, this trap may disappoint you.
Placement matters more than you might expect. Some reviewers tried multiple outlets and never caught much, while others in different locations had cards filling up quickly. The trap performs best near insect hotspots: kitchen counters, houseplants, exterior doors, and pet areas. It also works better when ambient lighting is low, since the UV light needs to stand out to attract insects. A trap plugged into a brightly lit room competes with every other light source.
LED durability is another concern that shows up in longer-term reviews. One user reported that after about 18 months, the LEDs on one side of the light bar dimmed noticeably. Six months later, the LEDs on a second unit burned out entirely. The trap still functioned with partial light output for a while, but eventually failed completely. This suggests a realistic lifespan of roughly two years for the hardware, which is worth factoring into the value calculation.
Ongoing Cost of Refill Cards
The trap itself is affordable, but the recurring cost of replacement glue cards is the hidden expense. Refill packs (model CSH503) start at $7.49 and come in 3-packs, 6-packs, or 12-packs. How often you replace them depends on how many insects you’re catching. In a home with a serious gnat problem, cards can fill up within a couple of weeks. In a lower-traffic area, a single card might last a month or more.
Several reviewers flagged refill costs as the main downside of an otherwise solid product. If you’re running multiple traps year-round, the card expense adds up. Buying the 12-pack brings the per-card price down and is worth considering if you plan to use the trap long-term.
Best Placement for Results
Where you plug in the trap has a major impact on whether you’ll be happy with it. The manufacturer recommends placing it near areas with visible insect activity: kitchens, near houseplants, bedrooms, close to exterior doors, and around pet feeding stations. These are the spots where flies and gnats tend to congregate, and where the UV light has the best chance of intercepting them.
For the strongest results, use the trap in rooms where you can reduce competing light sources, at least part of the time. Running it overnight in a kitchen or bedroom tends to yield the fullest glue cards. The trap does require an outlet, so placement is limited by where your outlets are. If your worst insect problem is far from an outlet, you may need a short extension cord or a different solution.
Who This Trap Is Best For
The Safer Home Indoor Fly Trap is a strong choice if your main targets are fruit flies, gnats, or small moths, especially if you want a chemical-free option that runs quietly in the background. It’s particularly well-suited for kitchens and bedrooms, and for homes with children or pets where sprays and zappers aren’t ideal.
It’s a weaker choice if you’re dealing primarily with large house flies or if you need coverage in a bright, open room far from outlets. The users who rate it one star tend to fall into one of two camps: they were targeting the wrong type of insect, or they placed the trap in a location where it couldn’t compete with ambient light. If you set expectations correctly and position it well, it delivers solid results for the price.