It can often be awkward trying to catch flies with your fingers or even trying to zap them with one of those tennis racket shaped zappers, but sundews work a treat.
The great thing about them is, not just that they are sticky so they stop even the largest of flies briefly enough for you to grab hold of them, but also because flies dont seem to be afraid of sundews. Try to catch a fly with your finger and they will usually fly off before you get chance to grab them. But with using a sundew, the flies either dont fly away and get stuck to the plant, or in some cases, they even fly into it.