RaidFly Ribbon, Fly Traps for Indoors and Outdoors, Bug Trap for Flying Insects, Pack of 10

If it doesn't have any lure then why does the box say it 'attracts' flies? How can it attract without a lure? I want to know if it has a lure.

Does it catch fruit fly?

How do I heat them if I forgot to do it before using?

How do I get rid of it without getting stick-um on my hands? Brushed it while hanging and was hard to wash off skin. Ew for stick-um plus dead flies.