30x100 yellow roll trap Product Description The Sticky Yellow Roll Trap Size: 30cm x 100m Made of: polyethylene (PE) th) Color: Yellow Target harmful: it is effective on many pests such as whitefly, aphids, fruit flies, trips. Purpose: used for mass capture purposes. Use: the side vents of the greenhouse should be attached to the edge posts from the interior of the greenhouse along the opening. It can be applied by pulling between trees in orchards. It can also be used by hugging the trunks of trees for insects that pass through the soil and the environment on foot to plants