Horiver Sticky Traps (Yellow - Large)

Horiver Yellow Sticky Traps — Large Cards (9.84" x 15.75") - Monitoring & Trapping for Flying Insect Pests
Horiver Yellow Sticky Traps are designed to monitor and trap flying insect pests in a variety of settings, including indoor spaces, greenhouses, and outdoor growing areas. Each card is coated with high-tack wet glue and sized for maximum visibility and coverage. The 9.84" x 15.75" format offers extended surface area for high-pressure zones and large-scale environments, making it ideal for comprehensive pest monitoring. Horiver Yellow is safe for use in any growing environment including greenhouses, nurseries, orchards, flower beds, interiorscapes, outdoor landscapes, indoor plants including houseplants and more.

A case includes 120 total cards, packaged in 10 packs of 12 cards each. You may purchase by the pack (12 cards) or by the case (10 packs of 12 cards).

Use For
Horiver Yellow traps target a wide range of flying pests, including:

Whiteflies (Trialeurodes vaporariorum, Bemisia tabaci)
Thrips (Frankliniella occidentalis, Thrips tabaci, Echinothrips americanus)
Leafminers (Liriomyza spp.)
Aphids (Myzus persicae, Aphis gossypii)
Fungus gnats and sciarids (Bradysia spp.)
Spider mites dispersed by wind currents
*While spider mites do not fly, they can travel via wind currents (ballooning) and land on sticky traps. Traps placed near vents, doors, and perimeter areas can intercept airborne introductions before colonization.

When to Use Horiver Yellow
Use Horiver traps year-round as part of your integrated pest management strategy. 

Recommended for:
Continuous monitoring of pest populations
Early detection before pest pressure escalates
Tracking windborne introductions such as spider mites
Placement in high-risk zones like doors, vents, and perimeter areas

How It Works
Mode of Action: Trapping via color attraction and adhesive capture
Behavior: Flying insects are drawn to the yellow color and become stuck on contact
Visual Effect: Pests are immobilized on the trap surface, providing a clear visual indicator of pest pressure

Monitoring Value:
Reveals pest presence, density, and movement trends
Supports timely biological control decisions
Reduces reliance on chemical interventions when paired with scouting

Action Rates & Placement Guidance

Trap Placement & Monitoring Strategy
Placement Height:
For tall plants: hang traps just above plant heads and raise as plants grow
For low canopy plants: mount traps on stakes or wire holders, no more than 12 inches above canopy
Rates are for tightly packed growing set-ups, for plants with significant spacing between them increase rate to rate per plant or every other plant

Perimeter Monitoring:
Place traps near doors, vents, and open sides to intercept windborne pests like spider mites

Horizontal Placement:
For leafminer detection, place traps flat on concrete paths or benches

Trap Saturation:
Replace traps weekly or when surfaces become saturated with insects

Monitoring Frequency:
Check traps at least once per week
Record pest counts to track trends and inform release timing of biological controls
Adjust trap density and placement dynamically based on scouting data

Note on Beneficials
Sticky traps may occasionally capture flying beneficial insects such as parasitic wasps. To minimize this, release beneficials away from trap locations. Despite this minor risk, sticky traps remain essential for early detection and accurate population tracking. Their value in preventing pest outbreaks far outweighs the small chance of incidental beneficial capture.

Best Working Conditions
Temperature: Effective across all growing environments
Humidity: Wet glue remains tacky even in high humidity
Plant Compatibility: Suitable for indoor, greenhouse, and outdoor plants

Compatibility Guidance
Safe for use with all biological control agents
Compatible with chemical controls

Product Specifications
Pack Size: 12 sticky cards
Case Size: 10 packs (120 cards total)
Card Dimensions: 9.84" x 15.75"
Color: Yellow (broad-spectrum attraction)

Storage & Handling
Store in a cool, dry place
Keep adhesive surfaces clean until use
Avoid contact with skin, hair, eyes, and clothing
Dispose by wrapping in paper and placing in trash per local regulations

What to Expect
Immediate attraction and capture of flying pests
Clear visual indication of pest pressure
Enhanced scouting accuracy when integrated with biological controls
Replace traps weekly or as needed based on pest load

Recommended IPM Pairings
Biological controls such as Swirskii sachets for Thrips control and Entomite-M for fungus gnat control

FAQs

What does “pressure” mean?
Pressure refers to pest population levels:

Preventative: No pests detected; proactive monitoring
Low Pressure: Few pests detected; early-stage presence
Medium Pressure: Moderate pest counts; localized hotspots
High Pressure: Heavy pest presence; widespread risk

How many traps should I use?
Follow action rate guidelines based on plant area and pest pressure. Increase density in hotspots.

Are these traps safe for beneficials?
Generally yes. To reduce incidental capture, release beneficials away from trap locations.

Can I use these in cannabis or sensitive plants?
Yes—Horiver traps are safe for all plant types.

Can these detect spider mites?
Yes—while spider mites do not fly, they can be blown in on wind currents and intercepted by traps placed near openings. Large cards are superior at catching problems blown in on wind currents due to having a larger surface area.

What makes Horiver Yellow traps different from Blue traps?
Horiver Yellow traps attract a broader spectrum of flying pests including whiteflies, fungus gnats, leaf miners, and thrips, while Horiver Blue traps are more selective and primarily target thrips.

What makes Horiver Yellow traps different from White traps?
Horiver Yellow traps are attractive to a broad spectrum of pests, whereas Horiver White traps are specifically designed to target Lygus spp. and are often used where these bugs are a primary concern.

What makes large cards different from small cards?
Large cards (9.84" x 15.75") provide greater surface area for high-pressure zones and large-scale environments. Large cards are superior at catching problems blown in on wind currents due to having a larger surface area. Small cards are better for tight spaces, smaller plant areas, and targeted monitoring where flexibility and discreet placement matter.