This fast-acting trap eliminates fruit fly infestations. You should notice a dramatic decrease in fruit fly populations withi. The ready-to-use, non-staining lure attracts adult fruit flies and lasts up to 45 days. The trap’s built-in window allows for easy monitoring of lure levels. The attractive, apple-shaped trap design will look at home in any kitchen. These traps are most effective when placed near fruit fly breeding areas.