Raid® Essentials fly trap catches up to 100% of fruit flies on day one of use and lasts up to 21 days. Safe to use around kids and pets when used as directed, this easy fruit fly trap contains no added fragrances, dyes, parabens or sulfates. As a discreet fruit fly trap, it can be placed on countertops or tables. To get rid of fruit flies, simply shake well before opening, place near the source of the flies, twist off the lid and remove the cap.