The pesticide-free Eaton Stick-A-Fly trap (No. 444) uses a combination sex and food pheromone lure to attract house flies, then trap them on the non-drying glue. It can be used indoors and out. The low-profile design — it looks like a paper towel holder — allows it to be placed discreetly near garbage containers, drains, closets, storerooms and more. It controls not only flies, but gnats, moths and other flying pests.