Black Flag Fly Window Trap, 1-Count TRAPS FLYING INSECTS: Once they land, they never leave. DISCREET DESIGN: Fits behind curtains and blinds and hides bugs from view. USE INDOORS: Adhere directly to any window. LASTS UP TO 2 MONTHS: Traps flies 24 hours a day, seven days a week, for up to 60 days. GUARANTEED: Guaranteed to work or your money back. See product label for details.