Carnivorous plants as pest control?

Carnivorous plants as pest control?

I just read an article about a carnivorous plant show, which got me to thinking--could carnivorous plants be used to control pests in the garden? How many would one need, and would they take out beneficials at the same rates as pests? Would one need to feed them if there weren't enough insects around? Anyone ever tried this? I haven't had really bad pest problems (some, mostly earwigs I think, but they do at least leave me most of my crops...) but I don't like the idea of using pesticides, so I am intrigued by this idea. They'd have to be kept from "getting out," of course, in areas where they are non-native. But wouldn't it be cool to fight plant-eating-bugs with bug-eating-plants?? :D
The first of the season…

The first of the season…

Creeping Phlox

Creeping Phlox

whats wrong with this plant

whats wrong with this plant

Banana Muffins

Banana Muffins

A favorite flower.

A favorite flower.

Mini Rose Plant

Mini Rose Plant