Dark matter searches in isolated noble gas scintillators with xenon and argon have set limits on WIMP interactions, such as recent cross sections from LUX and XENON. Particles scattering in the target emit photons detected by PMTs, identified via pulse shape discrimination developed on DEAP results. Shielding reduces the cosmic and radiation background. Neon has been studied as a clear, dense, low-background scintillator. CLEAN can use neon or argon and plans runs with both to study nuclear mass dependence of any WIMP signals.