One of the safest and most environmentally friendly ways to control foreign weeds is through the use of insects which are natural enemies of that particular alien weed. These insects, however, can be difficult to find since they must be located in the natural environment of the weed, and even more troublesome, must be taken as larvae so they can be reared and studied. But now, according to the Environmental News Network, researchers at the University of California, Davis have developed a new artificial food kit which can be taken into the field and used to raise adult insects from the larvae. Since it has worked for flies as well as weevils, and for insects from at least three species of plants, this news has biological control experts buzzing with excitement.