The Luralite Pro Fly Light and other light traps are not electric "zapper" traps that you might traditionally think of. Although, they use a UV light to attract the fly, the light traps use a sticky glue board that the fly will stick to once it lands in the trap. So there is no noise or attention brought to the light whatsoever.
The Luralite Pro Fly Light shows that the 15-watt 18" UV bulbs should be replaced every 6 months to be the most effective. For areas where fly pressure is only seasonal, you may change the bulbs annually in the Spring. UV lightbulbs will generally lose their efficacy before they burn out.
The Luralite Pro Fly Light comes with standard non shatterproof bulbs in the box from the manufacturer. We do however carry the same 15 watt 18" bulbs in shatterproof form if you wish to purchase those, too, and swap them out for your needs in a food manufacturing area.