Control Whitefly in Your Greenhouse Or Conservatory Without Pesticides

Small flying insect pests are attracted by the rare yellow colour and stick to the non-drying glue coating the trap

Many insect pests, are difficult to control with insecticides. By catching the winged adults with Agralan Yellow Sticky Traps before they reach the plants, the build up of pests will be delayed. Existing insect populations may also be reduced. If the problem is harsh biological controls may be used.

How Many Traps?

As a guidline use at the minimum one trap per 25 sq. feet of greenhouse area. (e.g two traps in a 6′ x 8′ greenhouse, three traps in an 8′ x 10′ greenhouse and five traps in an 8′ x 12′ greenhouse)

How to Use

Remove the protective cover paper from the traps. Suspend the traps just above the plants using the wire provided. Additional traps may be suspended near vents and doors to catch any insects flying from outside. Where plants are grown on benches, traps may be laid horizontally on the bench, removing the cover paper from the upper surface.

When to Use

Best results will be achieved if traps are introduced early in the season, before the pest is established. If adults are already present they should be disturbed by tapping the plants.

How Long Does it Last

The trap will stay sticky and attractive for several months. They should be changed sooner if more than half the surface is covered with insects or dust.


Scarid (mushroom) flies fly close to the ground. To catch them, traps should be located a few inches above the ground.

The traps may be used outdoors but tend to become coated with insects more rapidly. They attract and catch pollen Beetle and by hanging traps at the top of runner bean poles the levels of this pest may be reduced.

The traps may be used as an indicator for when to use biological control predators.

After introduction of predators, suspend the traps well above the crop, or use laid flat on the bench. If used as directed they will trap adult insects not affected by predators.

‘Non-flying’ insect pests (such as red spider) are not attracted but this pest is not promoted as the natural predators are unharmed.

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