LFSYS DIY Cup Cover
4.6Editor score
Includes twenty-five sticky cards
Simple DIY setup process
Odor-free and safe use
In this guide
Drain flies can be a nuisance in any home, appearing unexpectedly near sinks and drains. Finding the right trap helps you manage these pests effectively without harsh chemicals or complicated setups.
We compared ten popular drain fly traps based on effectiveness, ease of use, and customer feedback. Our list includes sticky traps, liquid treatments, and electronic options to suit different needs.
Each pick highlights key features and performance metrics to help you choose quickly. Please note that prices and availability may change over time, so check current listings before purchasing.
Top 3 Picks for Best Drain Fly Traps
TERRO Drain Insect Killer
4.2Editor score
Foam treatment for drains
Targets life cycles effectively
Works on all pipe types
Zevo Compact Flying Insect Trap
4.5Editor score
Compact design for tight spaces
Includes base and three refills
Safe for plants and pets
Top 10 Best Drain Fly Traps in 2026 Compared
This side-by-side comparison reviews all ten products to help you find the most suitable drain fly trap for your specific home environment and pest problem.
ProductsSpecificationsEditor scorePrice
Best Budget
TERRO Fruit Fly Trap 4-Pack
Four pack fruit fly traps
One hundred eighty days lure supply
Apple-shaped discreet design indoor
Non-staining ready to use formula
3.9Editor score
Editor's Choice
Zevo Flying Insect Trap Plug-in
Plug-in base with refill
Blue and UV light attraction
No-mess adhesive cartridge system
Family-friendly spray-free design
4.2Editor score
Best Premium
Zevo Flying Insect Trap 2-Pack
Two plug-in bases included
Continuous attraction day and night
Includes two replacement cartridges
Year-round indoor fly control
4.3Editor score
Fly Stick Sticky Fly Traps
Six pack sticky fly traps
Super sticky glue traps all
Non-toxic bait-free indoor option
Waterproof glue lasts three months
4.2Editor score
Fruit Fly Drain Treatment
One gallon all natural gel
Eliminates gnats and sewer flies
Breaks up drain scum fast
Safe for food areas
4.2Editor score
TERRO Drain Insect Killer
Foam treatment for infestations
Targets drain insect life cycles
Precise application extension tube
Up to three months protection
4.2Editor score
Zevo Compact Flying Insect Trap
Compact size for tight spaces
Includes base and three refills
No-mess trap and lock tech
Safe for use around plants
4.5Editor score
LFSYS DIY Cup Cover
Twenty five cup cover cards
Double-sided adhesive for trap
Mess-free low-profile design
Indoor-safe and odor-free use
4.6Editor score
Beedo Gnat Fruit Fly Trap
Plug-in device with five inserts
Blue and UV light combo
No touch mess-free disposal
Refillable system for value
3.9Editor score
RESCUE! Outdoor Fly Trap
Three reusable outdoor fly traps
Food-based attractant lures flies
Drowns flies in water trap
Made in the USA product
4.5Editor score
1. TERRO Drain Insect Killer – Best Overall Drain Fly Trap
TERRO Drain Insect Killer
Foam treatment for drains
Insect growth regulators included
Works on all pipe types
Precise application extension tube
The TERRO Drain Insect Killer stands out as a top choice for dealing with drain fly infestations. With a rating of 4.2, it is known for its foam treatment that targets the roots of the problem. Its standout quality is the ability to disrupt insect life cycles using growth regulators.
Pros
- Disrupts life cycles effectively
- Precise application tube included
- Works on all pipes
- Provides up to three months protection
- Eliminates fruit flies in drains
Cons
- Requires repeat applications for severe cases
- Foam may need careful handling
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This product uses an advanced foam formula that includes three insect growth regulators. This technology breaks cockroach and drain fly life cycles, helping to prevent new infestations from establishing. The extension tube allows for precise targeting into drainpipes and catch basins, ensuring complete coverage. It works on all pipe types including PVC, metal, and ceramic drains, making it versatile for any household application.
While effective, some users may find that severe infestations require repeat applications every two to four weeks. This is a common trait for treatment-based products aiming for long-term results. However, the trade-off is acceptable given the product's ability to provide up to three months of protection per application.
If you are looking for a comprehensive solution for indoor drain infestations, this TERRO product is a strong recommendation. It is suitable for kitchen sinks, bathroom drains, and floor drains. By eliminating larvae during the pupal stage, it helps maintain a clean environment free from annoying flying insects.
Disrupts Insect Life Cycles
The formula includes insect growth regulators that break the reproduction cycle of drain flies.
Precise Application Tube
An extension tube helps target deep into pipes where larvae develop and thrive.
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2. LFSYS DIY Cup Cover – Best Budget Drain Fly Trap
LFSYS DIY Cup Cover
Twenty five cup cover cards
Double-sided adhesive coating
Indoor-safe and odor-free
Low-profile discreet design
The LFSYS DIY Cup Cover offers an innovative and budget-friendly way to catch fruit flies and gnats. With a high rating of 4.6, it provides a simple setup where you use your own cup filled with an attractant like vinegar. Its standout quality is the high-strength double-sided adhesive that captures insects from above and inside.
Pros
- Includes twenty-five sticky cards
- Simple setup with any cup
- Odor-free and chemical-free
- Low-profile discreet design
- Great value pack
Cons
- Requires your own attractant liquid
- May not fit all cup sizes
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This product is designed for quick cup-to-trap setup. You simply peel off the release paper and place the sticky card over any cup filled with apple cider vinegar or wine. Both sides of the card are coated with extra-sticky glue for increased effectiveness. It is made without chemicals or fragrances, making it safe for use around food prep areas and pets.
One trade-off is that you must provide your own cup and attractant, which adds a small step to the process. Additionally, the low-profile design means it may not be as visible as other traps. However, the mess-free nature and odor-free operation make it a highly acceptable option for kitchens and dining areas.
If you need a cost-effective solution that does not require electricity or complex setup, this is a great pick. Each box includes twenty-five cup-top sticky cards, providing long-lasting coverage for multiple rooms or continuous seasonal use. It is an excellent choice for those who prefer a DIY approach to pest control.
Quick DIY Setup
Just peel the release paper and place the card over a cup filled with attractant.
High-Strength Adhesive
Double-sided glue traps insects from above and inside the cup effectively.
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3. Zevo Compact Flying Insect Trap – Best Premium Drain Fly Trap
Zevo Compact Flying Insect Trap
Compact size for tight spaces
Base and three refills included
Blue and UV light trap
Safe for plants and pets
The Zevo Compact Flying Insect Trap is a premium option for catching gnats and fruit flies effectively. With a rating of 4.5, it features a compact design that plugs in right where insects gather. Its standout quality is the Trap and Lock technology that hides trapped bugs behind a curved shield.
Pros
- Compact design for tight spaces
- Includes base and three refills
- Safe for plants and pets
- No-mess trap and lock tech
- Lures insects 24/7
Cons
- Requires power outlet for use
- Light may be bright at night
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This trap uses blue and UV light to attract flying insects day and night. It is made specifically for plants, kitchens, and tight spaces. The plug-in base comes with three refills for year-round indoor plant protection. It is safe for use around children and pets when used as directed and does not use sprays or insecticides.
A potential drawback is that it requires a power outlet, which limits placement compared to battery or sticky options. The blue light is bright enough to attract insects but might be noticeable in a dark room. However, for continuous protection in high-risk areas like kitchens or near plants, the convenience is worth it.
If you want a discreet and effective plug-in solution that is safe for your home environment, this Zevo compact trap is highly recommended. It eliminates the mess of sticky traps and provides continuous attraction. This is a strong choice for households with indoor plants where fungus gnats often gather.
Trap and Lock Technology
Hides trapped bugs behind a shield you never touch for mess-free disposal.
Continuous UV Light
Blue and UV light attracts flying insects like gnats and fruit flies 24/7.
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4. TERRO Fruit Fly Trap – Best Lure Supply
TERRO Fruit Fly Trap 4-Pack
Four pack fruit fly traps
One hundred eighty days lure supply
Non-staining ready to use
Apple-shaped discreet design
The TERRO Fruit Fly Trap 4-Pack provides comprehensive coverage for indoor fruit fly infestations. With a rating of 3.9, it offers 180 days of lure supply across four traps. Its standout quality is the food-based lure that eliminates flies within days of setup.
Pros
- Comprehensive 4-pack coverage
- 180 days of lure supply
- Non-staining ready to use
- Apple-shaped discreet design
- Targets breeding areas efficiently
Cons
- Apple shape may not suit all decor
- Requires placement near breeding areas
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This ready-to-use flying insect trap provides up to 45 days of continuous protection per trap. The non-staining formula requires no mixing or preparation, making it simple to deploy. The apple-shaped design blends seamlessly with fruit displays, maintaining discretion in your kitchen. Place near breeding areas like fruit bowls or trash cans for maximum impact.
Some users might find the apple shape less versatile than generic designs if placement is not near fruit bowls. Also, effectiveness depends on correct placement near the source of the infestation. These trade-offs are minor compared to the long lure supply and ease of use offered by this product.
For households needing a reliable and easy-to-use trap for long-term protection, this TERRO pack is a good choice. It helps eliminate pest populations and maintains a clean living environment. The comprehensive coverage ensures you have traps ready for different areas of the home.
180 Day Lure Supply
Provides enough lure supply for 180 days to keep your home protected.
Non-Staining Formula
Ready to use with no mixing or messy preparation needed.
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5. Zevo Flying Insect Trap Plug-in – Best Electronic Trap
Zevo Flying Insect Trap Plug-in
Plug-in base with refill
Blue and UV light attraction
No-mess adhesive cartridge
Family-friendly spray-free design
The Zevo Flying Insect Trap Plug-in is designed to catch flying insects day and night. With a rating of 4.2, it uses blue and UV light to attract house flies, fruit flies, and gnats. Its standout quality is the no-mess adhesive cartridge that hides trapped insects.
Pros
- Catch flying insects 24/7
- No-mess adhesive cartridge
- Spray-free and odor-free
- Safe for children and pets
- Year-round indoor fly control
Cons
- Requires frequent cartridge replacement
- Blinking light might be distracting
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This plug-in trap uses a continuous attraction method to catch pests without sprays or odors. The disposable glue cartridge works like a sticky trap but is hidden. A blinking blue light reminds you to check the cartridge every six weeks. It is safe for use around children and pets when used as directed.
A downside is that the cartridge needs regular replacement, which adds to ongoing costs. The blinking light is useful but might be distracting in a dark living room. However, for quiet, discreet control in kitchens and living rooms, the convenience of the plug-in design is a strong benefit.
If you want a set-and-forget solution that is safe for family homes, this Zevo trap is effective. It provides everyday indoor flying pest control without messy sticky traps. Stocking up on refills ensures you maintain a fly catcher in every room.
No-Mess Adhesive Cartridge
Holds trapped insects hidden on the wall-facing adhesive pad.
Spray-Free Design
Quickly controls small flying insects without spraying or zapping.
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6. Zevo Flying Insect Trap 2-Pack – Best Multi-Unit Value
Zevo Flying Insect Trap 2-Pack
Two plug-in bases included
Continuous attraction day and night
Includes two replacement cartridges
Year-round indoor fly control
The Zevo Flying Insect Trap 2-Pack offers a convenient way to cover multiple rooms with flying insect control. With a rating of 4.3, this set includes two devices and two cartridges. Its standout quality is the continuous 24/7 attraction using blue and UV light.
Pros
- Two plug-in bases included
- Continuous attraction day and night
- Two replacement cartridges included
- Safe for children and pets
- Year-round indoor fly control
Cons
- Higher upfront cost than single unit
- Requires two power outlets
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This set provides everyday indoor fly control for your kitchen and home. The no-mess adhesive cartridge works like a sticky trap but hides the bugs. A blinking blue light indicates when to check the cartridge every six weeks. It is safe for use around children and pets when used as directed.
The higher upfront cost might be a consideration if you only need one trap. Additionally, you will need two power outlets for full coverage. However, for families wanting to keep fly catchers in every room, this value pack is efficient and effective.
If you want to stock up on refills or cover multiple areas like kitchen and living room, this 2-pack is a solid pick. It helps maintain a clean environment free from annoying flying insects. The plug-in design ensures continuous protection day and night.
Two Devices Included
Perfect for covering multiple rooms like kitchen and living room.
Continuous Day and Night Catch
Uses UV light to catch insects around the clock effectively.
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7. Fly Stick Sticky Fly Traps – Best Sticky Strip
Fly Stick Sticky Fly Traps
Six pack sticky fly traps
Super sticky glue traps all
Non-toxic bait-free indoor option
Waterproof glue lasts three months
The Fly Stick Sticky Fly Traps offer a versatile solution for catching all bugs and gnats. With a rating of 4.2, these strips come in a 6-pack for extensive coverage. Its standout quality is the super sticky glue that traps virtually all bugs effectively.
Pros
- Super sticky glue traps all bugs
- Non-toxic and odorless
- Includes dish for your own bait
- Waterproof glue lasts three months
- Can hang or stand
Cons
- May not be discreet in living rooms
- Requires care to avoid touching
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This product is non-toxic, odorless, and bait-free, though it includes a dish to add your own bait. It can be hung or stood on a flat surface, making it versatile for indoor and outdoor use. The waterproof glue lasts for three months, ensuring long-term protection.
A trade-off is the visibility of the traps, which may not be discreet in living areas. Touching the sticky part should be avoided during handling. However, for garages, patios, or less visible indoor spaces, the effectiveness and durability are well worth it.
If you need a simple and effective trap that can be used indoors or outdoors, this Fly Stick pack is a great choice. It provides continuous pest control with minimal maintenance. The 24/7 support team also ensures help is available if issues arise.
Super Sticky Glue
Extremely sticky glue traps virtually all bugs effectively.
Includes Dish for Your Bait
Add your own bait to target specific flies like fruit flies.
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8. Fruit Fly Drain Treatment – Best Natural Treatment
Fruit Fly Drain Treatment
One gallon all natural gel
Eliminates gnats and sewer flies
Breaks up drain scum fast
Safe for food areas
The Fruit Fly Drain Treatment provides an all-natural way to eliminate gnats and sewer flies in your home. With a rating of 4.2, it is a non-toxic gel formula safe for use around food. Its standout quality is the ability to break up drain scum that breeds flies.
Pros
- All-natural non-toxic gel
- Eliminates gnats and sewer flies
- Breaks up drain scum
- Safe for use around food
- Keeps drains odor free
Cons
- Requires occasional maintenance application
- Gallon size may be too much
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This natural fruit fly eliminator works in all drains including kitchen sinks and garbage disposals. By preventing the buildup of organic scum, you eliminate the risk of another problem. The scum-busting properties make it effective for home and commercial use. Occasional use keeps your drains odor and scum free.
The gallon size might be more than needed for small households, but it offers long-term value. Applying it requires some effort to ensure it reaches all drain areas. However, given the all-natural and non-toxic nature, it is safe and effective for those avoiding harsh chemicals.
If you want a safe and natural way to treat drains for fruit flies and gnats, this treatment is ideal. It helps maintain a clean environment free from annoying flying insects. Regular use ensures your drains remain free of organic buildup.
All-Natural Gel
Safe for use around food and anywhere in the home.
Breaks Up Scum
Fast-acting treatment breaks up and digests drain scum effectively.
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9. Beedo Gnat Fruit Fly Trap – Best Starter Kit
Beedo Gnat Fruit Fly Trap
Plug-in device with five inserts
Blue and UV light combo
No touch mess-free disposal
Refillable system for value
The Beedo Gnat Fruit Fly Trap offers a quiet and clean way to eliminate flying insects. With a rating of 3.9, it uses blue and UV light to attract pests. Its standout quality is the no-touch mess-free operation with adhesive backing for easy disposal.
Pros
- Eliminate flying insects quietly
- Blue and UV light combo
- No touch mess-free operation
- Multiple room compatibility
- Includes five glue inserts
Cons
- Brightness might disturb sleep
- Cartridge can fill quickly
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This flying insect trap plug-in is suitable for kitchens, bathrooms, and other indoor spaces. The kit includes five glue inserts for lasting value. The bright light attracts insects but is not overpowering as a night light. It is a hands-off way to keep your space insect free.
The bright light might be disturbing in a bedroom at night, so placement is key. Also, the cartridge can fill up quickly in high-traffic areas. However, for the price and included refills, it offers a cost-effective alternative to zappers or sprays.
If you need a plug-in option that is simple to use and refill, this Beedo starter kit is a good choice. It provides 24/7 continuous protection for small flying insects. The multiple room compatibility makes it versatile for various spaces in your home.
No-Touch Mess-Free Operation
Simply plug it in and toss the cartridge when full.
Blue and UV Light
Combination attracts a wide variety of flying insects effectively.
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10. RESCUE! Outdoor Fly Trap – Best Outdoor Fly Trap
RESCUE! Outdoor Fly Trap
Three reusable outdoor fly traps
Food-based attractant lures flies
Drowns flies in water trap
Made in the USA product
The RESCUE! Outdoor Fly Trap is designed to catch and kill hundreds of common fly species outside. With a rating of 4.5, it uses a food-based attractant to lure flies into a water trap. Its standout quality is the reusable design that reduces plastic waste.
Pros
- Eliminates flies quickly
- Food-based attractant
- Reusable and reduces waste
- Made in the USA
- Reusable traps
Cons
- Must be used outdoors only
- Strong odor when activated
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This reusable trap catches flies including house flies, stable flies, and horse flies. Once inside, flies drown in the water added to the trap. You can reuse the trap season after season by dumping the contents and replacing the attractant. It is made in the USA for quality assurance.
The strong odor means this trap must be used outdoors at least 20 feet from living areas. It is not suitable for indoor use due to the scent and drowning mechanism. However, for patios or yards where flies gather, it is an effective and eco-friendly solution.
If you need a durable and effective trap for outdoor fly control, this RESCUE! option is excellent. It eliminates flies without harmful chemicals. The reusable nature makes it a sustainable choice for long-term use on your property.
Reusable and Eco-Friendly
Reduce plastic waste by reusing this trap season after season.
Food-Based Attractant
Uses food-based attractant instead of chemicals or sprays.
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Buying Guide – How to Choose the Best Drain Fly Traps
Choosing the right drain fly trap depends on several factors including where you need to place the trap and what type of pest problem you are facing.
Placement Location
Consider where you need to place the trap. Indoor traps should be safe for living areas, while outdoor traps can be placed away from patios. Some traps like the TERRO Foam Treatment work inside drains directly.
Always check if the product is designed for indoor or outdoor use to avoid issues with odors or safety.
Trap Mechanism
Different traps use different mechanisms such as sticky surfaces, UV light, or liquid bait. Sticky traps like Fly Stick catch flies on contact, while electronic traps like Zevo use light to attract pests over time. Choose the mechanism that fits your household preferences.
For families with pets or children, non-toxic and spray-free options are often safer.
Duration and Lifespan
Check how long the trap lasts before needing replacement. Some traps like TERRO Fruit Fly Trap offer up to 180 days of lure supply, while others require weekly cartridge changes. Longer lifespan options reduce maintenance frequency.
Select a trap that matches your willingness to maintain the pest control system regularly.
Safety and Ingredients
Ensure the product is safe for use around food and pets. Look for non-toxic and odor-free formulas if you have sensitive family members. Natural gels like the Fruit Fly Drain Treatment are safe for kitchen use.
Avoid strong chemical sprays if you prefer a more natural approach to pest control.
Ease of Use
Consider how easy the trap is to set up. Plug-in devices require power outlets but are ready to use. DIY options like the LFSYS Cup Cover need your own cup and attractant but offer flexibility. Ready-to-use foams and sticky traps need minimal setup.
Choose a product that matches your technical comfort level and available resources.
Cost and Value
Compare the upfront cost with the longevity of the product. Bulk packs often offer better value over time. While electronic traps may cost more initially, they might save money on refills compared to disposable sticky traps.
Balance your budget with the expected effectiveness and life of the product.
Specific Target Pests
Some traps target specific pests like fruit flies while others catch house flies and mosquitoes. Drain treatments are best for flies breeding inside pipes while sticky traps work for general flying insects. Identify your specific pest problem.
Choose a product that specifically targets the type of fly you are dealing with.
Aesthetics and Discretion
If you plan to place traps in visible areas like living rooms, discretion is key. Apple-shaped or low-profile traps like TERRO Fruit Fly Trap blend better with decor. Sticky strips might be less attractive in living spaces.
Select a trap that fits your home decor and personal preferences for visual appeal.
How to Use and Care for Your Drain Fly Traps
For electronic traps like Zevo, plug them in near where insects gather and replace cartridges when full. Ensure the device is not blocked by curtains or furniture.
For sticky traps or foam treatments, place them according to the package instructions. For foam, use the extension tube to reach deep into pipes. For sticky traps, hang them away from direct contact.
Regularly clean the area around the trap to remove food residue and moisture. This helps the trap work effectively and prevents new flies from breeding nearby.
Frequently Asked Questions
What are drain flies?
Drain flies are small flying insects that breed in moist environments like drains and pipes. They are often found in kitchens and bathrooms where organic matter accumulates. They can be a nuisance but are generally harmless.
How do I prevent drain flies?
Preventing drain flies involves keeping drains clean and dry. Use drain treatments regularly to break up organic buildup. Also, fix leaks and ensure proper ventilation in moisture-prone areas.
Are these traps safe for pets?
Most traps listed are safe for pets when used as directed. Non-toxic gel and spray-free options are particularly safe. Always keep traps out of reach of curious animals.
How often should I replace trap refills?
Replace refills when they are full or every few weeks depending on usage. Some traps have indicators like blinking lights to signal replacement. Check the product manual for specific timelines.
Can I use these traps outdoors?
Some traps are designed for outdoor use only like the RESCUE! Outdoor Trap. Indoor traps should not be used outside as they may not withstand weather. Always check the label.
Why am I still seeing flies after using a trap?
If flies persist, there may be another breeding source like a clogged drain. Ensure you are using the trap near the source and cleaning all drains regularly. Multiple traps may be needed for severe infestations.
Are natural treatments effective?
Natural treatments like gel formulas can effectively break down scum in drains. They are safer for families but may take longer to work than synthetic options. Consistent application is key.
Do these traps kill flies immediately?
Most traps work by luring flies over time. Sticky traps and drowning traps kill them once caught, while electronic traps capture them on adhesive. It may take a few days to see significant reduction.
Final Thoughts on Choosing the Best Drain Fly Traps
We have reviewed ten top drain fly traps ranging from foam treatments to sticky traps and electronic devices. Each offers unique benefits depending on your needs and location. The TERRO Foam and LFSYS DIY cover are our top picks.
Prioritize safety and ease of use when choosing a trap for your home. If you have pets or children, opt for non-toxic and odor-free options. Consider the location and specific pest problem before buying.
Remember to check current prices and availability before purchasing. These products are subject to change based on market conditions. We hope this guide helps you keep your home free from flying pests.