Most bug zappers are large and unsightly, so ZappLight hid one inside a regular LED bulb.

LED light bulbs, as great as they are, all look alike after a while. The same can't be said for the ZappLight bulb, which also happens to double as a bug zapper.

Researchers find old bulbs work almost as well as newer ones in helping zap bugs. This saves millions of dollars and more mercury from entering waste stream.