The washable insect collection tray at bottom of machine is another removable component. It gives me confidence when I buy. It's also easy to clean. Insects will be attracted to the zapper by this method. It will attract bugs like a honeybear to honey. It's perfect for on the go. The Bug Bulb Zapper is powered using a USB charging connection. The Electrizap Light allows you to customize the brightness level, so that your outdoor activities are well-lit. This lower price directly reflects on the quality of the product. I bought the Bug Bulb for a camping trip and I cannot express how valuable it was. Additionally, ensure that the zapper is placed in an area where insects are naturally present. This is closer to daylight light than the light emitted from standard bulbs.