Amgrow Cera Trap Fruit Fly Attractant refill is a 100% ecological solution that provides an attractive, long-lasting good bug buffet for fruit flies. Contains no pesticides, so it won't harm beneficial insects and is environmentally friendly. Suitable for use in the home or professionally by commercial growers as an attractant trap for use in greenhouses or to control populations of pests such as white flies, thrips and aphids.