Regardless of the number of traps used, they should be spread out evenly throughout a facility. From practical experience we know that spacing traps about 40 feet apart is a good rule of thumb. However, due to differing control requirements and existing conditions. The optimum number and distance between traps will vary from facility to facility and from room to room. Spread the first flytraps along the most critical insect pathways, onewhich leads from a dumpster to a food production area, for example.
Flytraps are most effective where insects are routinely detained and given more time to respond.
Research shows that a light trap placed waist high or lower is significantly more effective than one placed above 5 feet. There are exceptions, in rooms with unusual temperature stratifications, etc. Such a situation, occuring in a plant dock area, calls for large traps, mounted 8 to 10 feet from the floor, perpendicular to and above the door opening, so as not to draw insects in from the outside. For 30 years, Gilbert has been advising customers to practice proper, low, strategic placement of traps. Sincere critical thinking is overdue on the issue .