InsectKillers were created in the early 21st century to deter flies and insects using bright lights and electric grids or sticky pads that pull insects in and kill them instantly. While earlier models were noisy and messy, modern versions contain the dead insects in a plate below the grid until emptied. Flycatchers are commonly found in food service areas and used where many people congregate to prevent flies from bothering customers. Models by CosystDevices offer replaceable sticky pads or electric grids and collect insect parts in a container rather than dispersing them.