  We discuss the possibility of a laboratory search for light minicharged
particles carrying electric charge that is a small fraction $\epsilon$ of that
of electron. We point out that the production of pairs of such particles in an
electric field would result in a measurable discharge in vacuum of electrically
charged objects. A realistic experiment may be sensitive to such particles at
least down to $\epsilon \sim 10^{-8}$ if their mass is below $\sim 10^{-4}$eV.
