The Blue trap has some important advantages. As well as the blue being more attractive for the thrips. It is also far less attractive to other species. This increases the specificity of the traps and avoids the complications of attracting no target and in particular beneficial insects, which need to be preserved. The blue traps can comfortably be used in glasshouses etc. where beneficial insects are being released. Some insects are still caught but this is likely to be due to random contact. These are standard cut sized Paper sheets coated both the sides with insect sticky adhesive along with release paper.