Catching Principle: sugar water or soft food crumbs are placed in 5 bait stations on the electric fly catcher; As the flies feast, the rotating arms sweep over them, trapping them inside, They fly into tray and die a few days later; Pull off the bottom to empty the tray. Various Places to Use: the flying insect trap is suitable for kitchens, bedrooms, living rooms, farms and next to garbage cans,Since it is not waterproof, please keep it indoors and make sure there is a power outlet for the USB connector to connect to power. desserts are also good choices, but do not use hard food as baits. Safe to Use: the fly trap indoor uses physical methods to catch flies and can effectively attract flies and other flying insects, which can nicely relieve you of the worries about insets in summer. Away from Interference: when using this electric fly trap you need to that there is no human interference around, while not moving objects in the side, efficiently saving energy and your time, which is an ideal helper to solve the insects problem. Colour:White & Black Material:ABS Package Contents: 1 * White fly trap 1 * black fly trap Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.