Rescue Fruit Fly Trap RefillRescue fruit fly trap refill pack includes two tubes of attractant, used together to last 30 days. This Fruit fly trap boasts a superior attractant and color that's most appealing to fruit flies and it looks good in the kitchen in order to attract them. You can simply cut open the tubes and add the liquid to the trap's bottom cup and see the magic unfold. The fruit flies that get caught in the trap simply drown in the liquid to their death.