Stretch the roll out across the perimeter and secure to posts at frequent intervals.
Position roll above the crop surface or place parallel with the crop rows, taking care to avoid contact between the roll and plant canopy.
Collect trap data weekly but more frequently during the active part of the crop cycle.
Rolls could be left in place until the trapping surface is fully covered with insects. The glue can remain effective over a period of 10-12 weeks dependent on particulate levels.